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El-Sawy MA, Donia S, Elmowafy DA. Clinical and radiographic outcomes around 4 mandibular implant-retained overdentures in individuals with type 2 diabetes: A long-term retrospective study. J Dent 2024; 145:104982. [PMID: 38583644 DOI: 10.1016/j.jdent.2024.104982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 03/15/2024] [Accepted: 03/31/2024] [Indexed: 04/09/2024] Open
Abstract
OBJECTIVES To report the implant survival rates, clinical, and radiographic status after a period of more than 5 years in the function of 4 inter-foraminal implants retaining mandibular overdentures (OVDs) in individuals with T2DM. METHODS 78 completely edentulous participants with type 2 diabetic mellitus (T2DM) who had worn mandibular OVDs retained by 4 inter-foraminal implants for long-term functional life were selected for this study. The participants were divided into 2 groups according to glycosylated haemoglobin A1c (HbA1c) levels before implant placement: group I with an HbA1c value > 6.5 % (inadequately controlled T2DM), and group II with an HbA1c value ≤6.5 % (well-controlled T2DM). The inadequately controlled T2DM was further subdivided into 2 groups: Group IA with an HbA1c value > 6.5 % and ≤8 % (moderately controlled), and Group IB has an HbA1c value > 8 % (poorly controlled). Implant survival rate, plaque index (PI), bleeding on probing (BOP), probing depth (PD), and radiographic crestal bone level (CBL) around implants were measured. RESULTS Among 312 implants, 6 failed, 4 in well-controlled diabetics, and 2 in inadequately controlled diabetics. The overall survival rate was 98.07 %. The mean PI in group Ι was 36.4 (group IA =37.76, group IB = 34.27), and in group ΙΙ it was 19. The mean BOP in group Ι was 45.5 (group IA =47.84, group IB = 41.76), and in group ΙΙ it was 22. The mean PD in group Ι was 4.1 (group IA =4.3, group IB = 3.85) and in group ΙΙ was 2.2. The mean radiographic CBL in group Ι was 3.4 (group IA =3.7, group IB = 2.9), and in group ΙΙ was 1.5. Group IA exhibited a significantly greater level of PI, BOP, PD, and CBL compared to group IB and group IΙ (P1=0.017, P2=0.001). CONCLUSIONS Individuals with T2DM can benefit from 4 inter-foraminal implants retained mandibular OVDs, and their inability to maintain proper glucose control may not exclude implant success. CLINICAL SIGNIFICANCE This study is a significant step toward improving knowledge of options available for treatment and anticipated outcomes for T2DM completely edentulous populations undergoing implant therapy.
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Affiliation(s)
- Mohammed A El-Sawy
- Department of Prosthetic Dental Science, Faculty of Dentistry, Menoufia University, Shebin El Kom, Egypt; Department of Prosthodontics, Faculty of Applied Dental Science, Menoufia University, Shebin El Kom, Egypt.
| | - Sherin Donia
- Department of Prosthetic Dental Science, Faculty of Dentistry, Menoufia University, Shebin El Kom, Egypt
| | - Doaa A Elmowafy
- Department of Prosthodontics, Faculty of Dentistry, Mansoura University, Al-Dakahliya, Egypt
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Gupta V, Garg A, Tewari N, Srivastav S, Chanda A. Development of patient-specific finite element model for study of composite dental implants. Biomed Phys Eng Express 2024; 10:025035. [PMID: 38350117 DOI: 10.1088/2057-1976/ad28ce] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 02/13/2024] [Indexed: 02/15/2024]
Abstract
Traumatic dental injuries can occur due to various reasons such as accidents, sports injuries, fights, falls, and others. These injuries can affect the teeth, gums, and surrounding tissues, and can range from minor chips and cracks to severe fractures, dislocations, and avulsions (when the tooth is completely knocked out of the socket). The most common way to address this is by replacing affected teeth with dental implants. The purpose of this research is to evaluate the use of composite materials in dental implants and compare them with the traditionally used materials using a patient specific cone beam computed tomography (CBCT) based finite element model (FEM). To conduct this research, two different implant groups i.e., traditional implant and composite implant were designed using Titanium grade 4, zirconium oxide-reinforced lithium silicate (ZLS), and Zirconia (ZrO2). Six dental implants were designed namely Ti implant, ZLS implant, ZrO2implant, Ti-ZrO2composite, Ti-ZLS composite, and ZLS-ZrO2composite using 3D modelling software. Detailed full-scale 3D models of patient specific dental implant were developed and traumatic loading conditions were applied to the enamel of central incisor teeth or crown of dental implant, and maxilla was constrained in all directions. It was found that the use of composite materials for dental implants can reduce the stresses over the surface of abutment and implant as compared to traditional implants. The detailed models developed as a part of this study can advance the research on dental implants, and with further experimental validation allow the use of composite materials for fabrication of more stable dental implants.
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Affiliation(s)
- Vivek Gupta
- Centre for Biomedical Engineering, Indian Institute of Technology (IIT), Delhi, India
| | - Anshika Garg
- Centre for Biomedical Engineering, Indian Institute of Technology (IIT), Delhi, India
| | - Nitesh Tewari
- Department of Pediatric and Preventive Dentistry, All India Institute of Medical Sciences (AIIMS), Delhi, India
| | | | - Arnab Chanda
- Centre for Biomedical Engineering, Indian Institute of Technology (IIT), Delhi, India
- Department of Biomedical Engineering, All India Institute of Medical Sciences (AIIMS), Delhi, India
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Kutkut A, Almehmadi N, Mattos M, Sharab L, Al-Sabbagh M. Dental Implant Treatment in Bruxers: A Case Report and Literature Review. J ORAL IMPLANTOL 2023; 49:485-494. [PMID: 37776245 DOI: 10.1563/aaid-joi-d-22-00245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/02/2023]
Abstract
This case report presents a literature review and a case report of a full-mouth implant rehabilitation for a 65-year-old woman with a history of Bruxism. The patient's oral condition showed dentition with severe occlusal wear, extensive dental work, and missing teeth replaced with bridges and implants. The existing dental work was failing due to recurrent caries and the mechanical failure of long-span bridges. The unique aspect of the treatment presented in this report is the management of existing osseointegrated implants of different systems with different platform designs, which adds to the treatment's complexity. The existing implants were incorporated into the planned treatment, and other implants were added to support maxillary zirconia and mandibular hybrid full-arch prostheses. After 2 years of function, extensive wear was evident on the milled acrylic, even though an occlusal guard was used. New acrylic teeth were processed using the same milled titanium bar of the mandibular hybrid prosthesis, and the occlusal surfaces of the acrylic teeth were protected with gold onlays. The patient is seen regularly for maintenance every 6 months with no further complications. Careful evaluation, planning, and treatment execution are paramount in managing patients with a history of bruxism. Patients should be prepared and informed about possible mechanical failure and seen regularly for maintenance.
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Affiliation(s)
- Ahmad Kutkut
- Division of Prosthodontics, College of Dentistry, University of Kentucky, Lexington, Kentucky
| | - Nehal Almehmadi
- Division of Periodontology, College of Dentistry, University of Kentucky, Lexington, Kentucky
| | - Marcelo Mattos
- Division of Periodontology, College of Dentistry, University of Kentucky, Lexington, Kentucky
| | - Lina Sharab
- Division of Orthodontics, College of Dentistry, University of Kentucky, Lexington, Kentucky
| | - Mohanad Al-Sabbagh
- Division of Periodontology, College of Dentistry, University of Kentucky, Lexington, Kentucky
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Zaid W, Viet CT, Shum J, Kim D, Quimby A. The Role of Dental Implants in Complex Mandibular Reconstruction: How I Do It, How to Plan, and How to Avoid Pitfalls. Atlas Oral Maxillofac Surg Clin North Am 2023; 31:137-144. [PMID: 37500197 DOI: 10.1016/j.cxom.2023.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Affiliation(s)
- Waleed Zaid
- Department of Oral and Maxillofacial Surgery, Louisiana State University Health Sciences Center - New Orleans, 7777 Hennessy Boulevard, Medical Plaza 1, Suite 306, Baton Rouge, LA 70808, USA.
| | - Chi T Viet
- Department of Oral and Maxillofacial Surgery, Loma Linda University, 11092 Anderson Street, Room 3304, Loma Linda, CA 92350, USA
| | - Jonathan Shum
- Department of Oral and Maxillofacial Surgery, UT Houston, 6550 Fannin Street, #2237, Houston, TX 77030, USA
| | - David Kim
- Louisiana State University Health Sciences Center - Shreveport, West Entrance, 911 Margaret Place, Suite 104, Shreveport, LA 71101, USA
| | - Anastasiya Quimby
- Broward Health, 1411 North Flager Drive, Suite 7600, West Palm Beach, FL 33401, USA
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Berniyanti T, Palupi R, Alkadasi BA, Sari KP, Putri R I, Salma N, Prasita S, Regita A S. Oral Health-Related Quality of Life (OHRQoL) Analysis in Partially Edentulous Patients with and without Denture Therapy. Clin Cosmet Investig Dent 2023; 15:89-98. [PMID: 37216043 PMCID: PMC10199702 DOI: 10.2147/ccide.s407136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 04/29/2023] [Indexed: 05/24/2023] Open
Abstract
Purpose One of the Indonesians oral health problems today is teeth loss. Several treatments can be done to overcome the problems, especially to restore missing teeth function, which are mastication, speech function, and improve aesthetic. The aim of this study was to analyze the correlation between oral health-related quality of life (OHRQoL) domains physical health, psychological health, social relationships, environment, and the domain of Oral Impact on Daily Performance (OIDP) in partially edentulous patients with implants, conventional dentures, and non-users (without implant and conventional denture). Patients and Methods This is a cross-sectional analytic observational study. Samples were partially edentulous patients aged 15-70 in Surabaya were taken using a simple random sampling technique within inclusion criteria. Reliability and validity analysis was carried out with Eta correlation test and then comparative analysis was performed with Kruskal Wallis and Post Hoc test with Mann Whitney U-Test. All procedures were carried out in accordance with the relevant guidelines and regulations by Ethics Committee, Faculty of Dental Medicine, Unair, Surabaya, Indonesia (No: 441/HRECC.FODM/VII/2022). Results The results showed that there was a significant correlation between partially edentulous patients with and without dentures with the domains of physical health, psychological health, social, environment, and the domain of OIDP. Conclusion The study showed a statistically significant correlation between OHRQoL domain of physical health, psychological health, social and environment, and the domain of OIDP in partially edentulous patients with implants, conventional dentures, and non-users (without implants and conventional dentures). Edentulism is really felt by the people and has a negative effect meaningful to the physical, economic, and psychological. For this reason, in determining the use of implants, conventional dentures, and non-users (without implants and conventional dentures) it is important to consider domains of OHRQoL consisting of physical health, psychological health, social relationships, environment, and the domain of OIDP.
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Affiliation(s)
- Titiek Berniyanti
- Department of Dental Public Health, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Retno Palupi
- Department of Dental Public Health, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | | | - Kartika Putri Sari
- Graduate Student of Dental Health Science, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Indriasari Putri R
- Graduate Student, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Nadhifa Salma
- Graduate Student, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Shafa Prasita
- Graduate Student, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Stephanie Regita A
- Graduate Student, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
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Alhamoudi FH, Aldosari LIN, Alshadidi AAF, Hassan SAB, Alwadi MAM, Vaddamanu SK, Cicciù M, Minervini G. An Investigation of the Fracture Loads Involved in the Framework of Removable Partial Dentures Using Two Types of All-Ceramic Restorations. Biomimetics (Basel) 2023; 8:biomimetics8010113. [PMID: 36975343 PMCID: PMC10046878 DOI: 10.3390/biomimetics8010113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/21/2023] [Accepted: 03/06/2023] [Indexed: 03/12/2023] Open
Abstract
Retention and support are needed for removable partial denture stability. The stability can be achieved by clasps, occlusal and cingulum rests on healthy abutment teeth. However, implants or crowns can be used to support the removable partial denture instated on unhealthy abutment teeth. This study was conducted to investigate the fracture strength of two types of all-ceramic restorations used as abutments for the removable partial denture framework. The crowns were manufactured with two types of ceramic materials: zirconia and IPS e.max Press ceramics. The metal alloy (cobalt-chrome) was cast to form the removable partial denture framework. A universal testing machine was used to evaluate the fracture strength of both ceramic crown materials. The results presented no fractures in all-ceramic crowns, but deformation of the partial denture frameworks occurred. With the limitation of this study, it can be concluded that zirconia and IPS e.max Press ceramic can be used as abutments to provide adequate support to the removable partial denture.
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Affiliation(s)
- Fahad Hussain Alhamoudi
- Dental Technology Department, College of Applied Medical Science, King Khalid University, Abha 61421, Saudi Arabia
- Correspondence: (F.H.A.); (S.K.V.); (G.M.)
| | - Lujain Ibrahim N. Aldosari
- Department of Prosthetic Dentistry, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia
| | - Abdulkhaliq Ali F. Alshadidi
- Dental Technology Department, College of Applied Medical Science, King Khalid University, Abha 61421, Saudi Arabia
| | - Saeed Awod Bin Hassan
- Department of Restorative Dental Sciences, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia
| | - Maram Ali M. Alwadi
- Dental Health Department, College of Applied Medical Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sunil Kumar Vaddamanu
- Dental Technology Department, College of Applied Medical Science, King Khalid University, Abha 61421, Saudi Arabia
- Correspondence: (F.H.A.); (S.K.V.); (G.M.)
| | - Marco Cicciù
- Department of General Surgery and Medical-Surgical Specialties, School of Dentistry, University of Catania, 95124 Catania, Italy
| | - Giuseppe Minervini
- Multidisciplinary Department of Medical-Surgical and Odontostomatological Specialties, University of Campania “Luigi Vanvitelli”, 80121 Naples, Italy
- Correspondence: (F.H.A.); (S.K.V.); (G.M.)
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Tulbah HI, Alsahhaf A, AlRumaih HS, Vohra F, Abduljabbar T. Clinical Evaluation of Short Tuberosity Implants among Type 2 Diabetic and Non-Diabetic Patients: A 5 Year Follow-Up. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58101487. [PMID: 36295647 PMCID: PMC9611925 DOI: 10.3390/medicina58101487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/11/2022] [Accepted: 10/15/2022] [Indexed: 01/24/2023]
Abstract
Aim: To assess clinical and radiographic parameters including bleeding on probing (BoP); probing depth (PD), plaque index (PI) and crestal bone loss (CBL) around short tuberosity implants (STI) supporting fixed partial dentures in patients with Type 2 diabetes mellitus (T2DM) and non-diabetics. Material and Methods: Participants with T2DM and without T2DM with at least one STI (6 mm) posteriorly restored with a fixed partial denture splinting premolar implant were included. A questionnaire collected demographic details including gender, age, duration of diabetes, habits of brushing, the total number of dental implants and location, implant loading after placement, restoration type, and family history of DM. Clinical and radiographic assessment of peri-implant parameters, i.e., bleeding on probing (BoP), probing depth (PD), plaque index (PI), and crestal bone loss (CBL) was performed. The restorative success of STI was determined by no sensation of the foreign body, lack of pain and dysesthesia, lack of infection, no radiolucency around the implant, and no mobility. The Kruskal-Wallis test was used for statistical analysis. A p-value of less than 0.05 was considered statistically significant. Results: Twenty-five T2DM (19 males and 6 females) and 25 non-diabetic (18 males and 7 females) participants were included. The number of STIs in T2DM was 41, whereas in non-diabetic it was 38. At 1 year follow-up, mean PI% in T2DM participants was 18.9% (19.2-21.4%) and in non-diabetics it was 17.6% (16.3-18.5%). The mean PD was recorded in diabetics (1.3 ± 5.0 mm) and non-diabetics (1.1 ± 3.2 mm). The BoP value in diabetics was 44.9% (39.8-46.4%) and 28.2% in non-diabetics (17.2-24.6%). At 5 years of follow-up, the mean PI% range in T2DM participants was 26.18% (25.4-29.1%) and 24.42% in non-diabetic (20.1-25.5%). The mean PD in millimeters around STI in T2DM was observed to be 2.3 ± 4.8 mm and 1.4 ± 3.4 mm in non-diabetics. In addition, BoP in diabetic participants was 39.54% (27.7-42.1%) and 24.42% in non-diabetics (20.1-25.5%). A total of six STIs failed, i.e., two in the non-diabetic and four in the T2DM group. Conclusions: Patients with T2DM have poor periodontal (BoP, PD, CBL) and restorative peri-implant parameters around STIs when compared to healthy (non-diabetic) participants at five years of follow-up. For long-term stability, glycemic control is pivotal along with following good plaque control.
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Affiliation(s)
- Huda I. Tulbah
- Prosthetic Dental Science Department, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdulaziz Alsahhaf
- Prosthetic Dental Science Department, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia
| | - Hamad S. AlRumaih
- Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Fahim Vohra
- Prosthetic Dental Science Department, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia
- Research Chair for Biological Research in Oral Health, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia
| | - Tariq Abduljabbar
- Prosthetic Dental Science Department, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia
- Research Chair for Biological Research in Oral Health, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia
- Correspondence: ; Tel.: +966-134-755-444
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Panotopoulos GP, Haidar ZS. Thermal Load and Heat Transfer in Dental Titanium Implants: An Ex Vivo-Based Exact Analytical/Numerical Solution to the ‘Heat Equation’. Dent J (Basel) 2022; 10:dj10030043. [PMID: 35323245 PMCID: PMC8946864 DOI: 10.3390/dj10030043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/07/2021] [Accepted: 09/09/2021] [Indexed: 01/25/2023] Open
Abstract
Introduction: Heat is a kinetic process whereby energy flows from between two systems, hot-to-cold objects. In oro-dental implantology, conductive heat transfer/(or thermal stress) is a complex physical phenomenon to analyze and consider in treatment planning. Hence, ample research has attempted to measure heat-production to avoid over-heating during bone-cutting and drilling for titanium (Ti) implant-site preparation and insertion, thereby preventing/minimizing early (as well as delayed) implant-related complications and failure. Objective: Given the low bone–thermal conductivity whereby heat generated by osteotomies is not effectively dissipated and tends to remain within the surrounding tissue (peri-implant), increasing the possibility of thermal-injury, this work attempts to obtain an exact analytical solution of the heat equation under exponential thermal-stress, modeling transient heat transfer and temperature changes in Ti implants (fixtures) upon hot-liquid oral intake. Materials and Methods: We, via an ex vivo-based model, investigated the impact of the (a) material, (b) location point along implant length, and (c) exposure time of the thermal load on localized temperature changes. Results: Despite its simplicity, the presented solution contains all the physics and reproduces the key features obtained in previous numerical analyses studies. To the best of our knowledge, this is the first introduction of the intrinsic time, a “proper” time that characterizes the geometry of the dental implant fixture, where we show, mathematically and graphically, how the interplay between “proper” time and exposure time influences temperature changes in Ti implants, under the suitable initial and boundary conditions. This fills the current gap in the literature by obtaining a simplified yet exact analytical solution, assuming an exponential thermal load model relevant to cold/hot beverage or food intake. Conclusions: This work aspires to accurately complement the overall clinical diagnostic and treatment plan for enhanced bone–implant interface, implant stability, and success rates, whether for immediate or delayed loading strategies.
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Affiliation(s)
- Grigorios P. Panotopoulos
- Departamento de Ciencias Físicas, Universidad de la Frontera, Temuco 4811186, Chile;
- BioMAT’X I+D+i (Haidar Lab), Universidad de los Andes, Santiago 7550000, Chile
| | - Ziyad S. Haidar
- BioMAT’X I+D+i (Haidar Lab), Universidad de los Andes, Santiago 7550000, Chile
- Centro de Investigación e Innovación Biomédica (CiiB), Universidad de los Andes, Santiago 7550000, Chile
- Programa de Doctorado en BioMedicina, Facultad de Medicina, Universidad de los Andes, Santiago 7550000, Chile
- Facultad de Odontología, Universidad de los Andes, Santiago 7550000, Chile
- Correspondence: or ; Tel.: +56-2-2618-1372; Fax: +56-2-2214-9468
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Liu M, Wang Y, Zhang S, Wei Q, Li X. Success Factors of Additive Manufactured Root Analogue Implants. ACS Biomater Sci Eng 2022; 8:360-378. [PMID: 34990114 DOI: 10.1021/acsbiomaterials.1c01079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dental implantation is an effective method for the treatment of loose teeth, but the threaded dental implants used in the clinic cannot match with the tooth extraction socket. A root analogue implant (RAI) has the congruence shape, which reduces the damage to bone and soft tissue. Additive manufacturing (AM) technologies have the advantages of high precision, flexibility, and easy operation, becoming the main manufacturing method of RAI in basic research. The purpose of this systematic review is to summarize AM technologies used for RAI manufacturing as well as the factors affecting successful implantation. First, it introduces the AM technologies according to different operating principles and summarizes the advantages and disadvantages of each method. Then the influences of materials, structure design, surface characteristics, implant site, and positioning are discussed, providing reference for designers and dentists. Finally, it addresses the gap between basic research and clinical application for additive manufactured RAIs and discusses the current challenges and future research directions for this field.
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Affiliation(s)
- Minyan Liu
- Department of Industry Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Yanen Wang
- Department of Industry Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Shan Zhang
- Department of Industry Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Qinghua Wei
- Department of Industry Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Xinpei Li
- Department of Industry Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
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10
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Alammari M, Alqahtani M, Fageeha Y. Awareness, knowledge, and acceptance of dental implants among the geriatric population of Jeddah, Saudi Arabia. J Pharm Bioallied Sci 2022; 14:S464-S469. [PMID: 36110699 PMCID: PMC9469242 DOI: 10.4103/jpbs.jpbs_674_21] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/03/2021] [Accepted: 12/09/2021] [Indexed: 11/04/2022] Open
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Hamdoon Z, Talaat W, Aziz A, Abdul Sattar A, Kheder W, Jerjes W. The consequences and outcomes associated with dental implants encroaching on adjacent teeth. Clin Implant Dent Relat Res 2021; 23:851-856. [PMID: 34622556 DOI: 10.1111/cid.13047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/17/2021] [Accepted: 09/21/2021] [Indexed: 12/01/2022]
Abstract
BACKGROUND Dental implant placement carries a risk of iatrogenic damage to adjacent root surfaces. PURPOSE To classify and understand different types of trauma to the tooth root body by dental implants. MATERIALS AND METHODS This prospective case series included 43 implants placed between February 2017 and June 2020 that had primary stability and were in a position that accidentally invaded the adjacent teeth. The type and degree of the injury were evaluated clinically and radiographically. Tenderness, mobility, and sensitivity tests of the injured teeth were conducted at different visits. Implant failure was confirmed by the presence of implant mobility during the healing period. RESULTS Overall, 43 patients had root injuries due to dental implant surgeries. Regarding the 43 injured roots, 32 developed transient tenderness to percussion, 16 developed variable degrees of resorption in the cementum, three lost pulp sensitivity and one had persistent tenderness to percussion. No injured teeth were lost. In three patients, implant periapical lesions were confirmed radiographically as radiolucency near the apex of the involved implants. Out of the 43 implants, 11 failed and were removed within 6 months, with an implant failure rate of (25%). CONCLUSIONS Root damage after implant surgery varies depending on the type and severity of injury. Periodic clinical and radiographical examination is necessary to monitor root resorption and implant integration and to rule out pulp necrosis.
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Affiliation(s)
- Zaid Hamdoon
- Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, UAE.,University of Mosul, College of Dentistry, Mosul, Iraq.,Department of Oral and Maxillofacial Surgery, Yarmouk Dental University College, Baghdad, Iraq
| | - Wael Talaat
- Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, UAE.,Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Suez Canal University, Ismailia, Egypt
| | - Ahmed Aziz
- Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, UAE
| | - Abier Abdul Sattar
- Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, UAE
| | - Waad Kheder
- Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, UAE
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12
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Yesilyurt NG, Tuncdemir AR. An evaluation of the stress effect of different occlusion concepts on hybrid abutment and implant supported monolithic zirconia fixed prosthesis: A finite element analysis. J Adv Prosthodont 2021; 13:216-225. [PMID: 34504673 PMCID: PMC8410301 DOI: 10.4047/jap.2021.13.4.216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 07/22/2021] [Accepted: 07/27/2021] [Indexed: 11/08/2022] Open
Abstract
PURPOSE The aim of this study is to evaluate the effects of canine guidance occlusion and group function occlusion on the degree of stress to the bone, implants, abutments, and crowns using finite element analysis (FEA). MATERIALS AND METHODS This study included the implant-prosthesis system of a three-unit bridge made of monolithic zirconia and hybrid abutments. Three-dimensional (3D) models of a bone-level implant system and a titanium base abutment were created using the original implant components. Two titanium implants, measuring 4 × 11 mm each, were selected. The loads were applied in two oblique directions of 15° and 30° under two occlusal movement conditions. In the canine guidance condition, loads (100 N) were applied to the canine crown only. In the group function condition, loads were applied to all three teeth. In this loading, a force of 100 N was applied to the canine, and 200-N forces were applied to each premolar. The stress distribution among all the components of the implant-bridge system was assessed using ANSYS SpaceClaim 2020 R2 software and finite element analysis. RESULTS Maximum stress was found in the group function occlusion. The maximum stress increased with an increase in the angle of occlusal force. CONCLUSION The canine guidance occlusion with monolithic zirconia crown materials is promising for implant-supported prostheses in the canine and premolar areas.
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Affiliation(s)
| | - Ali Riza Tuncdemir
- Department of Prosthodontics, Faculty of Dentistry, Necmettin Erbakan University, Konya, Turkey
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Matter MT, Maliqi L, Keevend K, Guimond S, Ng J, Armagan E, Rottmar M, Herrmann IK. One-Step Synthesis of Versatile Antimicrobial Nano-Architected Implant Coatings for Hard and Soft Tissue Healing. ACS APPLIED MATERIALS & INTERFACES 2021; 13:33300-33310. [PMID: 34254508 DOI: 10.1021/acsami.1c10121] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Dental implant failure remains a prevalent problem around the globe. The integration of implants at the interface of soft and hard tissues is complex and susceptible to instability and infections. Modifications to the surface of titanium implants have been developed to improve the performance, yet insufficient integration and biofilm formation remain major problems. Introducing nanostructures on the surface to augment the implant-tissue contact holds promise for facilitated implant integration; however, current coating processes are limited in their versatility or costs. We present a highly modular single-step approach to produce multicomponent porous bioactive nanostructured coatings on implants. Inorganic nanoparticle building blocks with complex compositions and architectures are synthesized in situ and deposited on the implants in a single step using scalable liquid-feed flame spray pyrolysis. We present hybrid coatings based on ceria and bioglass, which render the implant surfaces superhydrophilic, promote cell adhesion, and exhibit antimicrobial properties. By modifications to the bioglass/ceria nanohybrid composition and architecture that prevent biomineralization, the coating can instead be tailored toward soft tissue healing. The one-step synthesis of nano-architected tissue-specific coatings has great potential in dental implantology and beyond.
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Affiliation(s)
- Martin T Matter
- Laboratory for Particles Biology Interactions, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
| | - Leonida Maliqi
- Laboratory for Particles Biology Interactions, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Kerda Keevend
- Laboratory for Particles Biology Interactions, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
| | - Stefanie Guimond
- Biointerfaces Laboratory, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Judith Ng
- Laboratory for Particles Biology Interactions, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
- Biointerfaces Laboratory, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Efe Armagan
- Laboratory for Biomimetic Membranes and Textiles, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Markus Rottmar
- Biointerfaces Laboratory, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Inge K Herrmann
- Laboratory for Particles Biology Interactions, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
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14
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Clinical, radiographic and restorative parameters for short tuberosity implants placed in smokers: a retrospective study with 5 year follow-up. Odontology 2021; 109:979-986. [PMID: 34240298 DOI: 10.1007/s10266-021-00623-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 06/03/2021] [Indexed: 10/20/2022]
Abstract
This study aimed to estimate and compare the clinical, radiographic, and restorative parameters around short tuberosity implants (STIs) placed in cigarette smokers (CS) and never smokers (NS). In this 60-month follow-up retrospective study, a total of 50 (37 males + 13 females) individuals who had received 82 dental implants were included. These participants were categorized into two groups as follows: (i) Group-1: 25 self-reported systemically healthy CS with 43 STIs; and (ii) Group-2: 25 self-reported systemically healthy NS with 39 STIs. In both groups, peri-implant plaque index (PI), probing depth (PD), bleeding on probing (BOP), and crestal bone loss (CBL) and restorative parameters were measured at 12 and 60 months of follow-up. Group comparisons were performed utilizing the Kruskal-Wallis test. The significance level was set at p < 0.05. In CS and NS, the mean age of participants was 58.5 and 60.7 years, respectively. No statistically significant differences were observed in the overall mean levels of PD and CBL around STIs among CS and NS. However, a statistically significant increase was observed in the mean scores of BOP and PI around STIs in the NS and CS at 12 and 60 months follow-up, respectively. In both groups, the loosening of the implant was the most frequently encountered type of STI failure. The outcomes of the present study suggest that STIs placed in maxillary tuberosity can show reliable clinical, radiographic, and restorative stability among cigarettes smokers and non-smokers. However, the role of smoking status and oral hygiene cannot be disregarded in this scenario.
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15
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Bayram YE, Eskan MA. A fixed reconstruction of partially edentulous patient with systemic scleroderma: A 4.8-year follow-up case report. Clin Adv Periodontics 2021; 12:159-162. [PMID: 34212516 DOI: 10.1002/cap.10174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 06/19/2021] [Indexed: 11/10/2022]
Abstract
INTRODUCTION Systemic scleroderma (SSc) is a progressive autoimmune multisystem disease affecting several organs. In the oral cavity, its manifestations include enlarged periodontal ligament, xerostomia, microsomia, alveolar bone loss, and premature teeth loss. A removable prosthesis would not be a treatment option due to loss of hand dexterity, reduced chewing capacity, microsomia, and xerostomia in these patients. Alternatively, implant-supported fixed restorations are a plausible treatment for these patients. However, there is very limited literature showing implant survival rate in patients with SSc for a long follow-up. CASE PRESENTATION A 57-year-old female patient with SSc presented to our clinic. She was diagnosed with SSc 25 years ago. Initial clinical and radiological examination revealed that she showed slight to moderate chronic periodontitis, tooth cavities, remaining tooth tips, and a partial edentulism in the posterior areas. A total of seven implants were placed at different time points. The remaining upper teeth were crowned. At 4.8 years follow-up, the placed implants showed no sign of peri-implant disease. CONCLUSION This case report indicated that 4.8 years of follow-up revealed good oral hygiene and clinically or radiologically no sign of peri-implant disease around the implants in a patient with SSc. Implant-supported fixed restoration could be a viable treatment approach in these patients.
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Affiliation(s)
- Yeter Eylul Bayram
- Hamidiye Sisli Etfal Education and Research Hospital, Department of Internal Medicine, Istanbul, Turkey
| | - Mehmet Akif Eskan
- Clinic Eska, Istanbul, Turkey.,NOVA Southeastern University College of Dental Medicine, Department of Periodontics, Fort Lauderdale, Florida, USA
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16
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Etöz O, Bertl K, Kukla E, Ulm C, Ozmeric N, Stavropoulos A. How old is old for implant therapy in terms of implant survival and marginal bone levels after 5-11 years? Clin Oral Implants Res 2021; 32:337-348. [PMID: 33368735 PMCID: PMC7986728 DOI: 10.1111/clr.13704] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 09/25/2020] [Accepted: 11/24/2020] [Indexed: 01/26/2023]
Abstract
Aim To evaluate implant survival and marginal bone levels (MBLevel) at least 5 years after implant installation in patients ≥65 years old. Methods Patient records were screened retrospectively for the following inclusion criteria: (1) ≥65 years of age at the time of implant installation, and (2) ≥5‐year radiographic follow‐up or registered implant loss. Association between patient‐ and implant‐related data with radiographically assessed data [i.e. implant survival, mean MBLevel (i.e. average of mesial and distal level) and maximum marginal bone loss (i.e. either mesial or distal loss; maximum MBLoss)] were statistically evaluated by mixed effects multi‐level regression models. Results Two‐hundred‐eighteen implants in 74 patients were included with a mean follow‐up of 6.2 years (range: 5 to 10.7 years); four early and six late implant losses have been registered (implant survival rate: 95.4%). Mean MBLevel and maximum MBLoss was 1.24 ± 0.9 mm and 1.48 ± 1.0 mm, respectively. Maximum MBLoss < 2 mm, 2 to 5 mm and ≥5 mm was found in 70.7, 28.8 and 0.5% of the implants, respectively. For both, mean MBLevel and maximum MBLoss, age presented a slightly protective effect (mean MBLevel: Coef. −0.041, p = .016; maximum MBLoss: Coef. −0.045, p = .014). Conclusion The high implant survival rate (95.4%), low mean MBLevel (1.24 mm) and low frequency of maximum MBLoss ≥ 5 mm (0.5%) observed herein after 5 to 11 years follow‐up suggest that older age should not be considered as a limiting factor for implant treatment.
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Affiliation(s)
- Onur Etöz
- Department of Periodontology, Faculty of Odontology, University of Malmö, Malmö, Sweden.,Department of Periodontology, Gazi University, Ankara, Turkey
| | - Kristina Bertl
- Department of Periodontology, Faculty of Odontology, University of Malmö, Malmö, Sweden.,Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Edmund Kukla
- Comprehensive Center Unit, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Christian Ulm
- Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Nurdan Ozmeric
- Department of Periodontology, Gazi University, Ankara, Turkey
| | - Andreas Stavropoulos
- Department of Periodontology, Faculty of Odontology, University of Malmö, Malmö, Sweden.,Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Division of Regenerative Dental Medicine and Periodontology, University Clinics of Dental Medicine (CUMD), University of Geneva, Geneva, Switzerland
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17
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Markowska-Szczupak A, Endo-Kimura M, Paszkiewicz O, Kowalska E. Are Titania Photocatalysts and Titanium Implants Safe? Review on the Toxicity of Titanium Compounds. NANOMATERIALS 2020; 10:nano10102065. [PMID: 33086609 PMCID: PMC7603142 DOI: 10.3390/nano10102065] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/15/2020] [Accepted: 10/16/2020] [Indexed: 12/11/2022]
Abstract
Titanium and its compounds are broadly used in both industrial and domestic products, including jet engines, missiles, prostheses, implants, pigments, cosmetics, food, and photocatalysts for environmental purification and solar energy conversion. Although titanium/titania-containing materials are usually safe for human, animals and environment, increasing concerns on their negative impacts have been postulated. Accordingly, this review covers current knowledge on the toxicity of titania and titanium, in which the behaviour, bioavailability, mechanisms of action, and environmental impacts have been discussed in detail, considering both light and dark conditions. Consequently, the following conclusions have been drawn: (i) titania photocatalysts rarely cause health and environmental problems; (ii) despite the lack of proof, the possible carcinogenicity of titania powders to humans is considered by some authorities; (iii) titanium alloys, commonly applied as implant materials, possess a relatively low health risk; (iv) titania microparticles are less toxic than nanoparticles, independent of the means of exposure; (v) excessive accumulation of titanium in the environment cannot be ignored; (vi) titanium/titania-containing products should be clearly marked with health warning labels, especially for pregnant women and young children; (vi) a key knowledge gap is the lack of comprehensive data about the environmental content and the influence of titania/titanium on biodiversity and the ecological functioning of terrestrial and aquatic ecosystems.
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Affiliation(s)
- Agata Markowska-Szczupak
- Department of Chemical and Process Engineering, West Pomeranian University of Technology in Szczecin, Al. Piastów 42, 71-065 Szczecin, Poland;
- Correspondence: (A.M.-S.); (E.K.)
| | - Maya Endo-Kimura
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan;
| | - Oliwia Paszkiewicz
- Department of Chemical and Process Engineering, West Pomeranian University of Technology in Szczecin, Al. Piastów 42, 71-065 Szczecin, Poland;
| | - Ewa Kowalska
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan;
- Correspondence: (A.M.-S.); (E.K.)
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18
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Dutta SR, Passi D, Singh P, Atri M, Mohan S, Sharma A. Risks and complications associated with dental implant failure: Critical update. Natl J Maxillofac Surg 2020; 11:14-19. [PMID: 33041571 PMCID: PMC7518499 DOI: 10.4103/njms.njms_75_16] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 02/27/2017] [Accepted: 09/09/2019] [Indexed: 11/25/2022] Open
Abstract
Risks and complications have been identified with dental implant failure though there is continuous innovation in implant systems and various interceptive treatment modalities. The success rate of dental implants has increased over a period of years as a treatment option for the rehabilitation of missing teeth. The dental implants are designed that best suits the various types of bone. Endosseous implants fail due to many reasons. Different reasons for the implant failure and their contributing factors have been discussed in this review article. A better understanding of the factors responsible for the implant failure will provide clinical decision-making and may enhance the field of implant dentistry. This article summarizes the factors causing implant failure. This paper presents the results of a survey of dentists practicing implant dentistry and updates regarding their knowledge of risk factors that they consider to be important for predicting dental implant failure.
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Affiliation(s)
- Shubha Ranjan Dutta
- Department of Oral and Maxillofacial Surgery, MB Kedia Dental College, Birgunj, Nepal
| | - Deepak Passi
- Department of Dentistry, Sub-Divisional Hospital, Ranchi, Jharkhand, India
| | - Purnima Singh
- Department of Physiology, MB Kedia Dental College, Birgunj, Nepal
| | - Mansi Atri
- Department of Public Health Dentistry, E.S.I.C. Dental College and Hospital, Delhi, India
| | - Stuti Mohan
- Department of Orthodontics, Subharti Dental College and Hospital, Meerut, Uttar Pradesh, India
| | - Abhimanyu Sharma
- Department of Oral and Maxillofacial Surgery, E.S.I.C. Dental College and Hospital, Delhi, India
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19
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ELMALI OM, ENİNANÇ İ, YELER D, HEPOKUR C, ÜNAL Y, YELER H. A Study On The Use Of Different Materials Combined With Allograft On Osseointegration And Bone Regeneration Of Dental Implants With Coronal Defects In A Rabbit Model. CUMHURIYET DENTAL JOURNAL 2020. [DOI: 10.7126/cumudj.712055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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20
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Wan R, Chu S, Wang X, Lei L, Tang H, Hu G, Dong L, Li D, Gu H. Study on the osteogenesis of rat mesenchymal stem cells and the long‐term antibacterial activity of
Staphylococcus epidermidis
on the surface of silver‐rich
TiN
/Ag modified titanium alloy. J Biomed Mater Res B Appl Biomater 2020; 108:3008-3021. [PMID: 32386277 DOI: 10.1002/jbm.b.34630] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 04/02/2020] [Accepted: 04/18/2020] [Indexed: 01/05/2023]
Affiliation(s)
- Rongxin Wan
- Central Laboratory the Second Hospital of Tianjin Medical University Tianjin China
| | - Shanshan Chu
- Central Laboratory the Second Hospital of Tianjin Medical University Tianjin China
| | - Xiaojuan Wang
- Central Laboratory the Second Hospital of Tianjin Medical University Tianjin China
| | - Li Lei
- Central Laboratory the Second Hospital of Tianjin Medical University Tianjin China
| | - Huiqing Tang
- Central Laboratory the Second Hospital of Tianjin Medical University Tianjin China
| | - Guoying Hu
- Central Laboratory the Second Hospital of Tianjin Medical University Tianjin China
| | - Lei Dong
- College of Physics & Materials Science Tianjin Normal University Tianjin China
| | - Dejun Li
- College of Physics & Materials Science Tianjin Normal University Tianjin China
| | - Hanqing Gu
- Central Laboratory the Second Hospital of Tianjin Medical University Tianjin China
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21
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Liu W, Zhou L, Xue H, Li H, Yuan Q. Growth differentiation factor 11 impairs titanium implant healing in the femur and leads to mandibular bone loss. J Periodontol 2020; 91:1203-1212. [PMID: 31983062 DOI: 10.1002/jper.19-0247] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 12/24/2019] [Accepted: 12/25/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND Growth differentiation factor 11 (GDF11), a secreted member of the transforming growth factor-β superfamily, has recently been suggested as an anti-aging factor that declines with age in the bloodstream, and restoration of the youthful level by administration of its recombinant protein could reverse age-related dysfunctions. However, its effects on titanium implant osseointegration and mandibular bone during aging remain unknown. METHODS Two-month-old and 18-month-old C57BL male mice were given daily intraperitoneal injections of recombinant GDF11 (rGDF11) or vehicle for 6 weeks. Experimental titanium implants were inserted into femurs on the fourth week. Inhibition of GDF11 function was achieved by GDF11 antibody. Implant-bearing femurs were subjected to histomorphometric analysis and biomechanical evaluation. Mandibles were scanned with micro-CT and decalcified for histological measurements. RESULTS In both young adult and aged mice, supraphysiologic GDF11 leads to a significantly decreased bone-to-implant contact ratio (BIC) and peri-implant bone volume/total volume (BV/TV) at the histologic level and reduced resistance at the biomechanical level, indicating weakened implant fixation. Moreover, rGDF11 administration resulted in less trabecular bone volume and thinner cortical thickness in the mandible, which was further compromised in the old animals. In contrast, inhibition of GDF11 improved peri-implant bone healing in old mice. CONCLUSIONS Rather than functioning as a rejuvenating factor, exogenous GDF11 negatively affects not only titanium implant healing but also mandibular bone in both young and old mice. In contrast, neutralization of endogenous GDF11 has positive effects on implant fixation in aged mice.
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Affiliation(s)
- Weiqing Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Liyan Zhou
- Dept. of Implant, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Hanxiao Xue
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Hanshi Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Quan Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
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22
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Dixon DR, London RM. Restorative design and associated risks for peri‐implant diseases. Periodontol 2000 2019; 81:167-178. [DOI: 10.1111/prd.12290] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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23
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Maló P, Araújo Nobre M, Lopes A, Ferro A, Nunes M. The All‐on‐4 concept for full‐arch rehabilitation of the edentulous maxillae: A longitudinal study with 5‐13 years of follow‐up. Clin Implant Dent Relat Res 2019; 21:538-549. [DOI: 10.1111/cid.12771] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/13/2019] [Accepted: 03/15/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Paulo Maló
- Oral Surgery DepartmentMaló Clinic Lisbon Portugal
| | | | | | - Ana Ferro
- Oral Surgery DepartmentMaló Clinic Lisbon Portugal
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24
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Saridakis SK, Wagner W, Noelken R. Retrospective cohort study of a tapered implant with high primary stability in patients with local and systemic risk factors-7-year data. Int J Implant Dent 2018; 4:41. [PMID: 30556111 PMCID: PMC6295441 DOI: 10.1186/s40729-018-0151-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Accepted: 10/24/2018] [Indexed: 11/23/2022] Open
Abstract
Objectives This retrospective study examined the mid- to long-term clinical and radiographic performance of a tapered implant in various treatment protocols in patients with local and systemic risk factors (RFs). Material and methods Two hundred seven NobelActive implants were inserted in 98 patients in the period from 10/2008 to 02/2015. The subdivision of the cohort was defined by local (n = 40), systemic (n = 6), local and systemic (n = 8), or without any RFs (n = 44) to analyze implant survival and marginal bone levels. Results Fifteen implants failed within the follow-up period. The mean follow-up period of the remaining implants was 34 months (range 12 to 77 months). The cumulative survival rate according to Kaplan-Meier was 91.5%. The survival rate for 93 implants in 45 patients with no RFs was 94.8% whereas it was 94% for 83 implants in 48 patients with local RFs (p = 0.618), 81.3% for 14 implants in 6 patients with systemic RFs (p = 0.173), and 76.5% for 17 implants in 6 patients with local and systemic risk factors (p = 0.006). The interproximal marginal bone level was − 0.49 ± 0.83 mm at the mesial aspect and − 0.51 ± 0.82 mm at the distal aspect in relation to implant shoulder level and showed no relevant difference in the various risk factor groups. Conclusions It can be assumed that the negative effects of the local or/and systemic risk factors were partially compensated by the primary stability and grade of osseointegration of the NobelActive implant. Clinical relevance The use of this system in patients with risk factors and immediate loading procedures.
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Affiliation(s)
- Sotirios Konstantinos Saridakis
- Department of Oral and Maxillofacial Surgery - Plastic Surgery, University Medical Center, Johannes Gutenberg University of Mainz, Augustusplatz 2, 55131, Mainz, Germany.
| | - Wilfried Wagner
- Department of Oral and Maxillofacial Surgery - Plastic Surgery, University Medical Center, Johannes Gutenberg University of Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - Robert Noelken
- Department of Oral and Maxillofacial Surgery - Plastic Surgery, University Medical Center, Johannes Gutenberg University of Mainz, Augustusplatz 2, 55131, Mainz, Germany.,Private Practice for Oral Surgery, Lindau/Lake Constance, Germany
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25
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Chatzopoulos GS, Wolff LF. Symptoms of temporomandibular disorder, self-reported bruxism, and the risk of implant failure: A retrospective analysis. Cranio 2018; 38:50-57. [PMID: 29985773 DOI: 10.1080/08869634.2018.1491097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
OBJECTIVE To investigate the association between symptoms of temporomandibular disorder and self-reported bruxism with the risk of implant failure. METHODS This retrospective study is based on 2127 records of patients who had 4519 implants placed and restored at the University of Minnesota School of Dentistry. Patient and implant level information were retrieved from each dental record: age, gender, implant location, as well as history of clicking, pain, difficulty opening, difficulty chewing, and clenching or grinding. RESULTS A total of 51 implant failures were identified in the sample. This corresponded to a failure rate of 1.1% at the implant level and 1.7% at the patient level. Among all the patient and implant level variables, the binary logistic regression showed that none of them were significantly associated with implant failure (p > 0.05). DISCUSSION The identification of risk indicators for implant loss can foster long-term implant survival, peri-implant health, and ultimately, implant prosthesis survival.
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Affiliation(s)
- Georgios S Chatzopoulos
- Department of Developmental and Surgical Sciences, Division of Periodontology, School of Dentistry, University of Minnesota , Minneapolis, MN, USA
| | - Larry F Wolff
- Department of Developmental and Surgical Sciences, Division of Periodontology, School of Dentistry, University of Minnesota , Minneapolis, MN, USA
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26
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Zhang Y, Zheng Z, Yu M, Hsu C, Berthiaume EA, Pan H, Zhang X, Stieg AZ, Wu B, Wang H, Ting K, Soo C. Using an Engineered Galvanic Redox System to Generate Positive Surface Potentials that Promote Osteogenic Functions. ACS APPLIED MATERIALS & INTERFACES 2018; 10:15449-15460. [PMID: 29664609 PMCID: PMC5993216 DOI: 10.1021/acsami.8b02798] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Successful osseointegration of orthopaedic and orthodontic implants is dependent on a competition between osteogenesis and bacterial contamination on the implant-tissue interface. Previously, by taking advantage of the highly interactive capabilities of silver nanoparticles (AgNPs), we effectively introduced an antimicrobial effect to metal implant materials using an AgNP/poly(dl-lactic- co-glycolic acid) (PLGA) coating. Although electrical forces have been shown to promote osteogenesis, creating practical materials and devices capable of harnessing these forces to induce bone regeneration remains challenging. Here, we applied galvanic reduction-oxidation (redox) principles to engineer a nanoscale galvanic redox system between AgNPs and 316L stainless steel alloy (316L-SA). Characterized by scanning electron microscopy , energy-dispersive X-ray spectroscopy, atomic force microscopy, Kelvin probe force microscopy, and contact angle measurement, the surface properties of the yield AgNP/PLGA-coated 316L-SA (SNPSA) material presented a significantly increased positive surface potential, hydrophilicity, surface fractional polarity, and surface electron accepting/donating index. Importantly, in addition to its bactericidal property, SNPSA's surface demonstrated a novel osteogenic bioactivity by promoting peri-implant bone growth. This is the first report describing the conversion of a normally deleterious galvanic redox reaction into a biologically beneficial function on a biomedical metal material. Overall, this study details an innovative strategy to design multifunctional biomaterials using a controlled galvanic redox reaction, which has broad applications in material development and clinical practice.
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Affiliation(s)
- Yulong Zhang
- Department of Bioengineering, University of California, Los Angeles, California 90095, United States
- Department of Advanced Prosthodontics, University of California, Los Angeles, California 90095, United States
| | - Zhong Zheng
- Division of Growth and Development, Section of Orthodontics, School of Dentistry, University of California, Los Angeles, California 90095, United States
| | - Mengliu Yu
- Division of Growth and Development, Section of Orthodontics, School of Dentistry, University of California, Los Angeles, California 90095, United States
- The Affiliated Hospital of Stomatology, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310006, China
| | - Chinyun Hsu
- Division of Growth and Development, Section of Orthodontics, School of Dentistry, University of California, Los Angeles, California 90095, United States
| | - Emily A. Berthiaume
- David Geffen School of Medicine, University of California, Los Angeles, California 90095, United States
| | - Hsinchuan Pan
- Division of Growth and Development, Section of Orthodontics, School of Dentistry, University of California, Los Angeles, California 90095, United States
| | - Xinli Zhang
- Division of Growth and Development, Section of Orthodontics, School of Dentistry, University of California, Los Angeles, California 90095, United States
| | - Adam Z. Stieg
- California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
| | - Benjamin Wu
- Department of Bioengineering, University of California, Los Angeles, California 90095, United States
- Department of Advanced Prosthodontics, University of California, Los Angeles, California 90095, United States
| | - Huiming Wang
- The Affiliated Hospital of Stomatology, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310006, China
| | - Kang Ting
- Division of Growth and Development, Section of Orthodontics, School of Dentistry, University of California, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
| | - Chia Soo
- Division of Plastic and Reconstructive Surgery and Department of Orthopaedic Surgery and the Orthopaedic Hospital Research Center, University of California, Los Angeles, California 90095, United States
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Liu J, Chen HY, DoDo H, Yousef H, Firestone AR, Chaudhry J, Johnston WM, Lee DJ, Emam HA, Kim DG. Efficacy of Cone-Beam Computed Tomography in Evaluating Bone Quality for Optimum Implant Treatment Planning. IMPLANT DENT 2018; 26:405-411. [PMID: 28125517 DOI: 10.1097/id.0000000000000542] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE This study examined (1) if cone-beam computed tomography (CBCT) can determine relative differences in bone mineral density distribution using clinical images of patients' mandibular bone and (2) if the relative differences can be used to detect the effects of sex and age on bone mineral density distribution. MATERIALS AND METHODS Sixty-six clinical CBCT images from patients (36 females and 30 males) of 3 age groups (40, 50, and 60 years) were identified. Alveolar (AB) and basal cortical bone (CB) regions were digitally isolated. A histogram of gray levels, which are proportional to degrees of bone mineralization, was obtained from each region. Mean, variability (SD and coefficient of variation), and percentage differences of gray level parameters between AB and basal CBs were computed. RESULTS Significant sex differences in gray level variability were observed within the postmenopausal age group (P < 0.042). CONCLUSION These findings suggest that clinical CBCT images can be a valuable tool in providing information on bone quality, which is an important criterion for optimum planning for dental implant placement.
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Affiliation(s)
- Jie Liu
- *Private Practice, Former Resident, Division of Orthodontics, College of Dentistry, Ohio State University, Columbus, OH. †Undergraduate Student, Division of Orthodontics, College of Dentistry, Ohio State University, Columbus, OH. ‡Predoctoral Student, Division of Orthodontics, College of Dentistry, Ohio State University, Columbus, OH. §Master Student, Clinical and Translational Science, College of Medicine, Ohio State University, Columbus, OH. ¶Associate Professor, Division of Orthodontics, College of Dentistry, Ohio State University, Columbus, OH. ‖Clinical Associate Professor, Department of Oral Pathology, Medicine and Radiology, School of Dentistry, Indiana University, Indianapolis, IN. #Professor Emeritus, Division of General Practice and Materials Science, College of Dentistry, Ohio State University, Columbus, OH. **Assistant Professor, Division of Restorative Sciences and Prosthodontics, College of Dentistry, The Ohio State University, Columbus, OH. ††Division of Oral and Maxillofacial Surgery, College of Dentistry, The Ohio State University, Columbus, OH
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Chen CH, Pei X, Tulu U, Aghvami M, Chen CT, Gaudillière D, Arioka M, Maghazeh Moghim M, Bahat O, Kolinski M, Crosby T, Felderhoff A, Brunski J, Helms J. A Comparative Assessment of Implant Site Viability in Humans and Rats. J Dent Res 2018; 97:451-459. [PMID: 29202640 PMCID: PMC5863872 DOI: 10.1177/0022034517742631] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Our long-term objective is to devise methods to improve osteotomy site preparation and, in doing so, facilitate implant osseointegration. As a first step in this process, we developed a standardized oral osteotomy model in ovariectomized rats. There were 2 unique features to this model: first, the rats exhibited an osteopenic phenotype, reminiscent of the bone health that has been reported for the average dental implant patient population. Second, osteotomies were produced in healed tooth extraction sites and therefore represented the placement of most implants in patients. Commercially available drills were then used to produce osteotomies in a patient cohort and in the rat model. Molecular, cellular, and histologic analyses demonstrated a close alignment between the responses of human and rodent alveolar bone to osteotomy site preparation. Most notably in both patients and rats, all drilling tools created a zone of dead and dying osteocytes around the osteotomy. In rat tissues, which could be collected at multiple time points after osteotomy, the fate of the dead alveolar bone was followed. Over the course of a week, osteoclast activity was responsible for resorbing the necrotic bone, which in turn stimulated the deposition of a new bone matrix by osteoblasts. Collectively, these analyses support the use of an ovariectomy surgery rat model to gain insights into the response of human bone to osteotomy site preparation. The data also suggest that reducing the zone of osteocyte death will improve osteotomy site viability, leading to faster new bone formation around implants.
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Affiliation(s)
- C.-H. Chen
- Craniofacial Research Center, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University School of Medicine, Taoyuan, Taiwan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - X. Pei
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - U.S. Tulu
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - M. Aghvami
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - C.-T. Chen
- Craniofacial Research Center, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University School of Medicine, Taoyuan, Taiwan
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan
| | - D. Gaudillière
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - M. Arioka
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
- Department of Clinical Pharmacology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - M. Maghazeh Moghim
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
- University College London Medical School, University College London, London, UK
| | - O. Bahat
- Private practice, Beverly Hills, CA, USA
| | | | | | | | - J.B. Brunski
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - J.A. Helms
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
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Duong A, Dudley J. Twenty-year analysis of implant treatment in an Australian public dental clinic. Aust Dent J 2018; 63:177-186. [PMID: 29396995 DOI: 10.1111/adj.12598] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/29/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND This retrospective cohort study reviewed dental implant treatment completed at the Adelaide Dental Hospital over a 20-year period. METHODS The database of implant treatment completed between 1996 and 2015 was analysed for patient, implant, prosthesis and operator specifics together with known implant status. RESULTS Three hundred and twenty patients (mean age, 51.50 years) were treated with 527 implants. One hundred and eighty-four female patients received 296 implants and 136 males received 231 implants. Three hundred implants were restored with single crowns, 147 implants were restored with 63 mandibular implant overdentures, five implants were restored with two maxillary implant overdentures and 67 implants were restored with 20 full-arch fixed prostheses. The overall known implant survival rate was 87.67%. Mandibular implant overdentures had a risk of implant failure four times that of single implant-retained crowns that was statistically significant (P = 0.0100). CONCLUSIONS Implant treatment completed in this public sector clinic using finite resources and a defined system of patient and restorative selection criteria demonstrated a high known implant survival rate. Utilizing a structured and maintained patient recall protocol, it would be ideal to investigate further parameters of interest, particularly those that could improve treatment delivery and longevity.
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Affiliation(s)
- A Duong
- Adelaide Dental School, The University of Adelaide, Adelaide, South Australia, Australia
| | - J Dudley
- Adelaide Dental School, The University of Adelaide, Adelaide, South Australia, Australia
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Stumpel LJ. Simplified fabrication of an implant-supported framework with luted abutment cylinders. J Prosthet Dent 2017; 118:5-9. [DOI: 10.1016/j.prosdent.2016.09.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 09/15/2016] [Accepted: 09/15/2016] [Indexed: 11/17/2022]
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Jannasch M, Gaetzner S, Weigel T, Walles H, Schmitz T, Hansmann J. A comparative multi-parametric in vitro model identifies the power of test conditions to predict the fibrotic tendency of a biomaterial. Sci Rep 2017; 7:1689. [PMID: 28490729 PMCID: PMC5431855 DOI: 10.1038/s41598-017-01584-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/31/2017] [Indexed: 01/19/2023] Open
Abstract
Despite growing effort to advance materials towards a low fibrotic progression, all implants elicit adverse tissue responses. Pre-clinical biomaterial assessment relies on animals testing, which can be complemented by in vitro tests to address the Russell and Burch’s 3R aspect of reducing animal burden. However, a poor correlation between in vitro and in vivo biomaterial assessments confirms a need for suitable in vitro biomaterial tests. The aim of the study was to identify a test setting, which is predictive and might be time- and cost-efficient. We demonstrated how sensitive in vitro biomaterial assessment based on human primary macrophages depends on test conditions. Moreover, possible clinical scenarios such as lipopolysaccharide contamination, contact to autologous blood plasma, and presence of IL-4 in an immune niche influence the outcome of a biomaterial ranking. Nevertheless, by using glass, titanium, polytetrafluorethylene, silicone, and polyethylene representing a specific material-induced fibrotic response and by comparison to literature data, we were able to identify a test condition that provides a high correlation to state-of-the-art in vivo studies. Most important, biomaterial ranking obtained under native plasma test conditions showed a high predictive accuracy compared to in vivo assessments, strengthening a biomimetic three-dimensional in vitro test platform.
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Affiliation(s)
- Maren Jannasch
- University Hospital Wuerzburg, Department Tissue Engineering and Regenerative Medicine (TERM), Roentgenring 11, 97070, Wuerzburg, Germany
| | - Sabine Gaetzner
- University Hospital Wuerzburg, Department Tissue Engineering and Regenerative Medicine (TERM), Roentgenring 11, 97070, Wuerzburg, Germany
| | - Tobias Weigel
- University Hospital Wuerzburg, Department Tissue Engineering and Regenerative Medicine (TERM), Roentgenring 11, 97070, Wuerzburg, Germany
| | - Heike Walles
- University Hospital Wuerzburg, Department Tissue Engineering and Regenerative Medicine (TERM), Roentgenring 11, 97070, Wuerzburg, Germany.,Fraunhofer Institute for Interfacial Engineering and Biotechnology, Translational Center Wuerzburg Regenerative Therapies in Oncology and Musculoskeletal Disease, 97070, Wuerzburg, Germany
| | - Tobias Schmitz
- University Hospital Wuerzburg, Department Tissue Engineering and Regenerative Medicine (TERM), Roentgenring 11, 97070, Wuerzburg, Germany
| | - Jan Hansmann
- University Hospital Wuerzburg, Department Tissue Engineering and Regenerative Medicine (TERM), Roentgenring 11, 97070, Wuerzburg, Germany. .,Fraunhofer Institute for Interfacial Engineering and Biotechnology, Translational Center Wuerzburg Regenerative Therapies in Oncology and Musculoskeletal Disease, 97070, Wuerzburg, Germany.
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Afrashtehfar KI, Assery MK. From dental science to clinical practice: Knowledge translation and evidence-based dentistry principles. Saudi Dent J 2017; 29:83-92. [PMID: 28725125 PMCID: PMC5503095 DOI: 10.1016/j.sdentj.2017.02.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 02/12/2017] [Indexed: 01/07/2023] Open
Abstract
It has been claimed that in order to decrease the gap between what we know and what we do, research findings must be translated from knowledge to action. Such practices better enable dentists to make evidence-based decisions instead of personal ideas and judgments. To this end, this literature review aims to revisit the concepts of knowledge translation and evidence-based dentistry (EBD) and depict their role and influence within dental education. It addresses some possible strategies to facilitate knowledge translation (KT), encourage dental students to use EBD principles, and to encourage dental educators to create an environment in which students become self-directed learners. It concludes with a call to develop up-to-date and efficient online platforms that could grant dentists better access to EBD sources in order to more efficiently translate research evidence into the clinic.
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Affiliation(s)
- Kelvin I. Afrashtehfar
- Department for Reconstructive Dentistry & Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
- Oral Health & Research Division, Faculty of Dentistry, McGill University, Montreal, QC, Canada
- Corresponding author at: Department of Reconstructive Dentistry & Gerodontology, School of Dental Medicine, Faculty of Medicine, University of Bern, Rm C305, Freiburgstrasse 7, CH-3010 Bern, Berne, Switzerland. Fax: +41 31 632 49 33.Department of Reconstructive Dentistry & GerodontologySchool of Dental MedicineFaculty of MedicineUniversity of BernRm C305, Freiburgstrasse 7CH-3010 BernBerneSwitzerland
| | - Mansour K. Assery
- Deanship for Post Graduate and Scientific Research, Riyadh Colleges of Dentistry and Pharmacy, Riyadh, Saudi Arabia
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Tardive Dyskinesia, Oral Parafunction, and Implant-Supported Rehabilitation. Case Rep Dent 2016; 2016:7167452. [PMID: 28050290 PMCID: PMC5168480 DOI: 10.1155/2016/7167452] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 10/26/2016] [Accepted: 11/15/2016] [Indexed: 01/05/2023] Open
Abstract
Oral movement disorders may lead to prosthesis and implant failure due to excessive loading. We report on an edentulous patient suffering from drug-induced tardive dyskinesia (TD) and oral parafunction (OP) rehabilitated with implant-supported screw-retained prostheses. The frequency and intensity of the movements were high, and no pharmacological intervention was possible. Moreover, the patient refused night-time splint therapy. A series of implant and prosthetic failures were experienced. Implant failures were all in the maxilla and stopped when a rigid titanium structure was placed to connect implants. Ad hoc designed studies are desirable to elucidate the mutual influence between oral movement disorders and implant-supported rehabilitation.
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Comparative Analysis of Screw Loosening With Prefabricated Abutments and Customized CAD/CAM Abutments. IMPLANT DENT 2016; 25:770-774. [DOI: 10.1097/id.0000000000000481] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Pommer B, Valkova V, Ubaidha Maheen C, Fürhauser L, Rausch-Fan X, Seeman R. Scientific Interests of 21st Century Clinical Oral Implant Research: Topical Trend Analysis. Clin Implant Dent Relat Res 2015; 18:850-6. [PMID: 26315310 DOI: 10.1111/cid.12371] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Discrimination between ongoing and solved research questions may help to distinguish established dogmas from evidence-based implant dentistry. PURPOSE The purpose of this study was to investigate topics of interest in the field of oral implant science and evolving thematic trends in clinical studies during the last decade. MATERIALS AND METHODS Electronic and manual searches of English literature were performed to identify clinical studies on oral implants. Out of 15,695 publications screened, 2,875 clinical investigations were included. RESULTS Among the most prevalent topics were immediate loading (14.3%), bone substitutes (11.6%), lateral sinus grafting (10.7%), implant overdentures (10.5%), single-tooth implant crowns (8.8%), cross-arch implant bridges (8.0%), immediate implant placement (7.5%), implant surfaces (7.0%), simultaneous implant placement and augmentation (6.4%) as well as guided bone regeneration (5.3%). Significant increase of scientific interest was seen in immediate loading (+6.3%, p < .001), platform switching (+2.9%, p < 0.001), lateral sinus grafting (+2.3%, p = .024), flapless implant surgery (+2.2%, p < 0.001), and guided implant surgery (+1.9%, p = .011), while research on implant overdentures (-6.6%, p = .033) and tooth-to-implant connection (-2.5%, p = .010) was on the decline. CONCLUSIONS Literature coverage, since the beginning of the 21st century, has seen greater focus on surgical topics compared to prosthodontic issues (p = .005) while only few topics experienced decrease of interest indicating scientific consensus.
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Affiliation(s)
| | - Vesela Valkova
- Bernhard Gottlieb School of Dentistry, Medical University of Vienna, Vienna, Austria
| | | | | | | | - Rudolf Seeman
- Department of Oral and Maxillofacial Surgery, Medical University of Vienna, Vienna, Austria
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Nakajima R, Maekawa K, Sonoyama W, Ueda A, Kuboki T. Concealed Jiggling Effect: A Novel Risk Factor for Complications of Implant-Supported Fixed Partial Denture. J ORAL IMPLANTOL 2015; 41:491-4. [DOI: 10.1563/aaid-joi-d-13-00216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Ryu Nakajima
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
| | - Kenji Maekawa
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
| | - Wataru Sonoyama
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
| | - Akihiro Ueda
- Dental Laboratories, Hospital Medical Technology Part, Okayama University Hospital, Okayama, Japan
| | - Takuo Kuboki
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
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Kim SG, Chung CH, Son MK. Effect of cement washout on loosening of abutment screws and vice versa in screw- and cement- retained implant-supported dental prosthesis. J Adv Prosthodont 2015; 7:207-13. [PMID: 26140172 PMCID: PMC4486616 DOI: 10.4047/jap.2015.7.3.207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 02/09/2015] [Accepted: 03/05/2015] [Indexed: 11/08/2022] Open
Abstract
PURPOSE The purpose of this study was to examine the abutment screw stability of screw- and cement-retained implant-supported dental prosthesis (SCP) after simulated cement washout as well as the stability of SCP cements after complete loosening of abutment screws. MATERIALS AND METHODS Thirty-six titanium CAD/CAM-made implant prostheses were fabricated on two implants placed in the resin models. Each prosthesis is a two-unit SCP: one screw-retained and the other cemented. After evaluating the passive fit of each prosthesis, all implant prostheses were randomly divided into 3 groups: screwed and cemented SCP (Control), screwed and noncemented SCP (Group 1), unscrewed and cemented SCP (Group 2). Each prosthesis in Control and Group 1 was screwed and/or cemented, and the preloading reverse torque value (RTV) was evaluated. SCP in Group 2 was screwed and cemented, and then unscrewed (RTV=0) after the cement was set. After cyclic loading was applied, the postloading RTV was measured. RTV loss and decementation ratios were calculated for statistical analysis. RESULTS There was no significant difference in RTV loss ratio between Control and Group 1 (P=.16). No decemented prosthesis was found among Control and Group 2. CONCLUSION Within the limits of this in vitro study, the stabilities of SCP abutment screws and cement were not significantly changed after simulated cement washout or screw loosening.
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Affiliation(s)
- Seok-Gyu Kim
- Department of Prosthodontics, Samsung Medical Center, College of Medicine, Sungkyunkwan University, Seoul, Republic of Korea
| | - Chae-Heon Chung
- Department of Prosthodontics, College of Dentistry, Chosun University, Gwangju, Republic of Korea
| | - Mee-Kyoung Son
- Department of Prosthodontics, College of Dentistry, Chosun University, Gwangju, Republic of Korea
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Affiliation(s)
- J Dudley
- School of Dentistry; The University of Adelaide; South Australia Australia
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Garg P, Pujari M, Prithviraj DR, Khare S. Retentiveness of various luting agents used with implant-supported prosthesis: an in vitro study. J ORAL IMPLANTOL 2015; 40:649-54. [PMID: 25506659 DOI: 10.1563/aaid-joi-d-12-00008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Desired retrievability of cemented implant-supported fixed prosthesis makes the retentive strength of cementing agents an important consideration. The aim of the study was to evaluate the retentiveness of purposely designed implant cement and compare its retentiveness with dental cements that are commonly used with implant systems. Ten implant analogs were embedded in auto-polymerizing acrylic resin blocks and titanium abutments were attached to them. Fifty standardized copings were waxed directly on the abutment and casted. The cements used were: (1) resin-bonded zinc oxide eugenol cement, (2) purposely designed implant cement, (3) zinc phosphate cement, (4) zinc polycarboxylate cement, and (5) glass ionomer cement. After cementation, each sample was subjected to a pull-out test using universal testing machine and loads required to remove the crowns were recorded. The mean values and standard deviations of cement failure loads were analyzed using ANOVA and Bonferroni test. The mean values (± SD) of loads at failure (n = 10) for various cements were as follows (N): resin-bonded zinc oxide eugenol cement 394.62 (± 9.76), Premier implant cement 333.86 (± 18.91), zinc phosphate cement 629.30 (± 20.65), zinc polycarboxylate cement 810.08 (± 11.52), and glass ionomer cement 750.17 (± 13.78). The results do not suggest that one cement type is better than another, but they do provide a ranking order of the cements regarding their ability to retain the prosthesis and facilitate easy retrievability.
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Abstract
In this article, current literature on fixed and removable prosthodontics is reviewed along with evidence-based systematic reviews, including advice from those in the dental profession with years of experience, which help restorative dentists manage and treat their cases successfully. Treatment planning for restorative implantology should be looked at in 4 sections: (1) review of past medical history, (2) oral examination and occlusion, (3) dental imaging (ie, cone-beam computed tomography), and (4) fixed versus removable prosthodontics. These 4 concepts of treatment planning, along with proper surgical placements of the implant(s), result in successful cases.
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Affiliation(s)
- Ricardo A Boyce
- Department of Dentistry, The Brooklyn Hospital Center, New York, NY, USA.
| | - Gary Klemons
- Department of Dentistry, The Brooklyn Hospital Center, New York, NY, USA; Private Practice, Brooklyn, NY, USA
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Abstract
Titanium has gained immense popularity and has successfully established itself as the material of choice for dental implants. In both medical and dental fields, titanium and its alloys have demonstrated success as biomedical devices. Owing to its high resistance to corrosion in a physiological environment and the excellent biocompatibility that gives it a passive, stable oxide film, titanium is considered the material of choice for intraosseous use. There are certain studies which show titanium as an allergen but the resources to diagnose titanium sensivity are very limited. Attention is needed towards the development of new and precise method for early diagnosis of titanium allergy and also to find out the alternative biomaterial which can be used in place of titanium. A review of available articles from the Medline and PubMed database was done to find literature available regarding titanium allergy, its diagnosis and new alternative material for titanium.
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Affiliation(s)
- Manish Goutam
- Department of Prosthodontics and Implantology, Rishiraj College of Dental Sciences and Research Centre, Bhopal, Madhya Pradesh, India
| | - Chandu Giriyapura
- Department of Prosthodontics and Implantology, Rishiraj College of Dental Sciences and Research Centre, Bhopal, Madhya Pradesh, India
| | - Sunil Kumar Mishra
- Department of Prosthodontics and Implantology, Rishiraj College of Dental Sciences and Research Centre, Bhopal, Madhya Pradesh, India
| | - Siddharth Gupta
- Department of Prosthodontics and Implantology, Rishiraj College of Dental Sciences and Research Centre, Bhopal, Madhya Pradesh, India
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Maló P, Araújo Nobre MD, Lopes A, Rodrigues R. Double Full-Arch Versus Single Full-Arch, Four Implant-Supported Rehabilitations: A Retrospective, 5-Year Cohort Study. J Prosthodont 2014; 24:263-70. [PMID: 25273895 DOI: 10.1111/jopr.12228] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2014] [Indexed: 12/31/2022] Open
Abstract
PURPOSE To report the 5-year outcome of the All-on-4 treatment concept comparing double full-arch (G1) and single-arch (G2) groups. MATERIALS AND METHODS This retrospective cohort study included 110 patients (68 women and 42 men, average age of 55.5 years) with 440 NobelSpeedy groovy implants. One hundred sixty-five full-arch, fixed, immediately loaded prostheses in both jaws were followed for 5 years. G1 consisted of 55 patients with double-arch rehabilitations occluded with implant-supported fixed prostheses, and G2 consisted of 55 patients with maxillary single-arch rehabilitations or mandibular single-arch rehabilitations occluded with natural teeth or removable prostheses. The groups were matched for age (±6 years) and gender. Primary outcome measures were cumulative prosthetic (both interim and definitive) and implant survival (Kaplan-Meier product limit estimator). Secondary outcome measures were marginal bone levels at 5 years (through periapical radiographs and using the patient as unit of analysis) and the incidence of mechanical and biological complications. Differences in survival curves (log-rank test), marginal bone level (Mann-Whitney U test), and complications (chi-square test) were compared inferentially between the two groups using the patient as unit of analysis with significance level set at p ≤ 0.05. RESULTS No dropouts occurred. Prosthetic survival was 100%. Five patients lost 5 implants (G1: n = 3; G2: n = 2) before 1 year, rendering an estimated cumulative survival rate of 95.5% (G1: 94.5%; G2: 96.4%; Kaplan-Meier, p = 0.645, nonsignificant). The average (SD) marginal bone level was 1.56 mm (0.89) at 5 years [G1: 1.45 mm (0.77); G2: 1.67 mm (0.99); p = 0.414]. The incidence rate of mechanical complications (in both interim and definitive prostheses) was 0.16 and 0.13 for G1 and G2, respectively (p = 0.032). The incidence rate of biological complications was 0.06 and 0.05 for G1 and G2, respectively (p = 0.669). CONCLUSIONS Based on the results, rehabilitating double- or single-arch edentulous patients did not yield significant differences on survival curves. The incidence of mechanical complications was significantly higher for double-arch rehabilitated patients but nevertheless, these mechanical complications did not affect the long-term survival of either the prostheses or the implants.
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Affiliation(s)
- Paulo Maló
- Oral Surgery Department, Malo Clinic, Lisbon, Portugal
| | | | - Armando Lopes
- Oral Surgery Department, Malo Clinic, Lisbon, Portugal
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Zafiropoulos GG, Hoffmann O, Deli G. A method for fabrication of implant-supported fixed partial dentures. J ORAL IMPLANTOL 2014; 40:271-9. [PMID: 24914913 DOI: 10.1563/aaid-joi-d-11-00048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
When restoring a partially edentulous arch with an implant-supported fixed partial denture, the optimal fit and function of the final restoration depend on the fabrication of an accurate impression and the registration of the interocclusal relationship. The present case report presents a method for the fabrication of impressions and the registration of the interocclusal relationship for implant-supported partial dentures. The described method allows the accurate transfer of the implant position and the registration of the interocclusal relationship using transfer key and electroformed gold copings. The key and copings were used to transfer the intraoral implant position to the cast, to position the abutments intraorally, and to facilitate the fabrication of the final partial denture.
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Li T, Zhang Y, Shao B, Gao Y, Zhang C, Cao Q, Kong L. Partially Biodegradable Distraction Implant to Replace Conventional Implants in Alveolar Bone of Insufficient Height: A Preliminary Study in Dogs. Clin Implant Dent Relat Res 2014; 17:1164-73. [PMID: 24888978 DOI: 10.1111/cid.12229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Dental implants have been widely used in the last few decades. However, patients with insufficient bone height need reconstructive surgeries before implant insertion. The distraction implant (DI) has been invented to simplify the treatment procedure, but the shortcomings of DIs have limited their clinical use. We incorporated biodegradable polyester into a novel DI called the partially biodegradable distraction implant (PBDI). PURPOSE The purpose of this study was to assess the radiological, histological, and biomechanical properties of the PBDI in animal models. MATERIAL AND METHODS PBDIs were manufactured and inserted into the atrophied mandibles of nine dogs. Box-shaped alveolar bones were segmented and distracted. The dogs were randomly divided into three groups that were sacrificed 1, 2, and 3 months after the implant insertion. Actual augmentation height (AAH) of the bone segments was measured to evaluate the effect of distraction. X-ray examination and micro-CT reconstruction and analysis were used to evaluate the regenerated bone in the distraction gap and bone around the functional element. Histological sections were used to evaluate the osseointegration and absorption of the PBDI. Fatigue tests were used to evaluate the biomechanical properties of the PBDI. RESULTS Little change was found in AAH among the three groups. X-ray examination and micro-CT reconstruction showed good growth of regenerated bone in the distraction gap. Alveolar bone volume around the functional element increased steadily. No obvious bone absorption occurred in the alveolar crest around PBDI. Three months after distraction, the functional element achieved osseointegration, and the support element began to be absorbed. All PBDIs survived the fatigue test. CONCLUSIONS The PBDI is a novel and reliable dental implant. It becomes a conventional implant after the absorption of the support element and the removal of the distraction screw. It is a promising replacement for conventional implants in patients with insufficient alveolar bone height.
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Affiliation(s)
- Tao Li
- State Key Laboratory of Military Stomatology, Department of Orthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, China.,Department of Stomatology, PLA Second Artillery General Hospital, Beijing, China
| | - Yongqiang Zhang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Bo Shao
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Yuan Gao
- Department of Stomatology, No. 263 Clinical Section of the General Hospital of Beijing Military Region, Beijing, China
| | - Chen Zhang
- Department of Neurology, PLA Second Artillery General Hospital, Beijing, China
| | - Qiang Cao
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Liang Kong
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, China
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Siadat H, Hashemzadeh S, Geramy A, Bassir SH, Alikhasi M. Effect of Offset Implant Placement on the Stress Distribution Around a Dental Implant: A Three-Dimensional Finite Element Analysis. J ORAL IMPLANTOL 2014; 41:646-51. [PMID: 24666333 DOI: 10.1563/aaid-joi-d-13-00163] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
There are some anatomical restrictions in which implants are not possible to be inserted in their conventional configuration. Offset placement of implants in relation to the prosthetic unit could be a treatment solution. The aim of this study was to evaluate the effect of the offset placement of implant-supported prosthesis on the stress distribution around a dental implant using 3D finite element analysis. 3D finite element models of implant placement in the position of a mandibular molar with 4 configurations (0, 0.5, 1, 1.5 mm offset) were created in order to investigate resultant stress/strain distribution. A vertical load of 100 N was applied on the center of the crown of the models. The least stress in peri-implant tissue was found in in-line configuration (0 mm offset). Stress concentration in the peri-implant tissue increased by increasing the amount of offset placement. Maximum stress concentration in all models was detected at the neck of the implant. It can be concluded that the offset placement of a single dental implant does not offer biomechanical advantages regarding reducing stress concentration over the in-line implant configuration. It is suggested that the amount of offset should be as minimum as possible.
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Affiliation(s)
- Hakimeh Siadat
- 1 Dental Implant Research Centre, Dentistry Research Institute and Department of Prosthodontics, Faculty of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Shervin Hashemzadeh
- 2 School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Allahyar Geramy
- 3 Department of Orthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Hossein Bassir
- 4 Division of Periodontology, Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Mass
| | - Marzieh Alikhasi
- 1 Dental Implant Research Centre, Dentistry Research Institute and Department of Prosthodontics, Faculty of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
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Neugebauer J, Stachulla G, Ritter L, Dreiseidler T, Mischkowski RA, Keeve E, Zöller JE. Computer-aided manufacturing technologies for guided implant placement. Expert Rev Med Devices 2014; 7:113-29. [DOI: 10.1586/erd.09.61] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Dudley J. Maxillary implant overdentures: current controversies. Aust Dent J 2013; 58:420-3. [DOI: 10.1111/adj.12116] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/03/2013] [Indexed: 11/30/2022]
Affiliation(s)
- J Dudley
- School of Dentistry; Faculty of Health Sciences; The University of Adelaide; South Australia
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Borba AM, Souza DFM, Brozoski MA, Burim RA, Naclério-Homem MDG, Deboni MCZ. Can the use of antibiotics interfere with the success of dental osseointegrated implants in diabetic patients? J Contemp Dent Pract 2013; 14:1197-1201. [PMID: 24858776 DOI: 10.5005/jp-journals-10024-1476] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM The present review aims to discuss the last 10 years published data on the topic of the use of osseointegrated implants in diabetic subjects, particularly regarding the influence of antibiotics administration in the perioperative period. BACKGROUND In the last decades, oral rehabilitation significantly has evolved particularly with the use of osseointegrated implants. Increased life expectation of population is reflecting in a greater number of diabetic patients who might require dental osseointegrated implants rehabilitation. Diabetes was considered for a long time as a contraindication for oral implant placement. In this context, the use of antibiotics is still a controversial factor when we correlate it to implant success rate. REVIEW RESULTS Although 228 articles were initially selected for evaluation of proposed criteria, only 16 articles were considered valid. Among the 16 selected articles, only six articles represented clinical research that discussed the influence of the antibiotic in the success of osseointegration of dental implants in diabetic subjects. Five were retrospective studies and one a prospective research. CONCLUSION Data favors the use of antibiotics without significant side effects but clinical investigations of the need of prophylaxis antibiotic or therapeutic antibiotics are still scarce. The lack of adequate methodology is one of the main problems of the current articles. It is important to emphasize that studies should present detailed methodology in order to allow reproducibility. CLINICAL SIGNIFICANCE Permanent tooth loss is a pathological condition that affects millions of people worldwide. The possibility of successful treatment of edentulous areas through osseointegrated implants in those systemic compromised patients is a matter of scientific discussion. Although antimicrobial agents must be used rationally and carefully to avoid development of bacterial resistance, more studies are needed in order to support evidence regarding the influence of antibiotics in the success of dental implant surgery in diabetic patients.
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Affiliation(s)
- Alexandre Meireles Borba
- PhD Student, Department of Oral and Maxillofacial Surgery Traumatology and Prosthesis, Faculty of Dentistry of the University of Sao Paulo, USP, São Paulo, Brazil, e-mail:
| | - Daniel Falbo Martins Souza
- PhD Student, Department of Oral and Maxillofacial Surgery Traumatology and Prosthesis, Faculty of Dentistry of the University of Sao Paulo, USP, São Paulo, Brazil
| | - Mariana Aparecida Brozoski
- PhD Student, Department of Oral and Maxillofacial Surgery Traumatology and Prosthesis, Faculty of Dentistry of the University of Sao Paulo, USP, São Paulo, Brazil
| | - Rafael Augusto Burim
- MSc Student, Department of Oral and Maxillofacial Surgery Traumatology and Prosthesis, Faculty of Dentistry of the University of Sao Paulo, USP, São Paulo, Brazil
| | - Maria da Graça Naclério-Homem
- Associate Professor, Department of Oral and Maxillofacial Surgery Traumatology and Prosthesis, Faculty of Dentistry of the University of Sao Paulo, USP, São Paulo, Brazil
| | - Maria Cristina Zindel Deboni
- Associate Professor, Department of Oral and Maxillofacial Surgery Traumatology and Prosthesis, Faculty of Dentistry of the University of Sao Paulo, USP, São Paulo, Brazil
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Mehl C, Harder S, Steiner M, Vollrath O, Kern M. Influence of cement film thickness on the retention of implant-retained crowns. J Prosthodont 2013; 22:618-25. [PMID: 23915027 DOI: 10.1111/jopr.12058] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2013] [Indexed: 11/30/2022] Open
Abstract
PURPOSE The main goal of this study was to establish a new, high precision procedure to evaluate the influence of cement film thickness on the retention of cemented implant-retained crowns. MATERIALS AND METHODS Ninety-six tapered titanium abutments (6° taper, 4.3 mm diameter, Camlog) were shortened to 4 mm. Computer-aided design was used to design the crowns, and selective laser sintering, using a cobalt-chromium alloy, was used to produce the crowns. This method used a focused high-energy laser beam to fuse a localized region of metal powder to build up the crowns gradually. Before cementing, preset cement film thicknesses of 15, 50, 80, or 110 μm were established. Glass ionomer, polycarboxylate, or resin cements were used for cementation. After 3 days storage in demineralized water, the retention of the crowns was measured in tension using a universal testing machine. RESULTS The cement film thicknesses could be achieved with a high level of precision. Interactions between the factors cement and cement film thickness could be found (p ≤ 0.001). For all cements, crown retention decreased significantly between a cement film thickness of 15 and 50 μm (p ≤ 0.001). At 15 μm cement film thickness, the resin cement was the most retentive cement, followed by the polycarboxylate and then the glass ionomer cement (p ≤ 0.05). CONCLUSIONS The results suggest that cement film thickness has an influence on the retentive strength of cemented implant-retained crowns.
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Yuan JCC, Sukotjo C. Occlusion for implant-supported fixed dental prostheses in partially edentulous patients: a literature review and current concepts. J Periodontal Implant Sci 2013; 43:51-7. [PMID: 23678387 PMCID: PMC3651937 DOI: 10.5051/jpis.2013.43.2.51] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Accepted: 03/22/2013] [Indexed: 11/08/2022] Open
Abstract
Implant treatment has become the treatment of choice to replace missing teeth in partially edentulous areas. Dental implants present different biological and biomechanical characteristics than natural teeth. Occlusion is considered to be one of the most important factors contributing to implant success. Most literature on implant occlusal concepts is based on expert opinion, anecdotal experiences, in vitro and animal studies, and only limited clinical research. Furthermore, scientific literature regarding implant occlusion, particularly in implant-supported fixed dental prostheses remains controversial. In this study, the current status of implant occlusion was reviewed and discussed. Further randomized clinical research to investigate the correlation between implant occlusion, the implant success rate, and its risk factors is warranted to determine best clinical practices.
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Affiliation(s)
- Judy Chia-Chun Yuan
- Department of Restorative Dentistry, University of Illinois at Chicago College of Dentistry, Chicago, IL, USA
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