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Niroomand MR, Arabbeiki M, Rouhi G. Optimization of thread configuration in dental implants through regulating the mechanical stimuli in neighboring bone. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2023; 231:107376. [PMID: 36736135 DOI: 10.1016/j.cmpb.2023.107376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 12/12/2022] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND AND OBJECTIVE The threads, as the most critical component of dental implants, transfer the imposed occlusal loads to the adjacent bone. Moreover, regulation of the mechanical stimuli in the implant adjacent bone is crucial to maximize the bone-implant construct stability. An optimal thread design can be resulted when the distribution of mechanical stimuli within the bone, and at the implant-bone interface, lie in an advised confined range. In this work, with the goal of finding the optimal thread design, which can provide the maximum level of stability, the effects of thread parameters, namely, thread depth, thread width, and thread pitch, together with upper and lower thread angles, on maximum principal strain within the cortical and cancellous bone, and shear strain at the implant-bone interface, were investigated. METHODS In this study, the response surface methodology (RSM), due to the central composite design (CCD), was employed to obtain a set of 53 experiments. Following that, they were numerically simulated using the finite element method (FEM). The polynomial regression model was then used to predict the response functions based on the magnitude of thread parameters. The effectiveness of each thread parameter was also evaluated through statistical tools. Moreover, the non-dominated sorting genetic algorithm (NSGA-II) was performed to find the optimum dimensions of the thread. RESULTS Through comparing the results obtained from analyzing initial and optimized configuration of threads, it was shown that the latter causes a reduction in the maximum principal strains in cancellous and cortical bones by about 25% and 30%, respectively, which is in favor of making a higher quality bone, and thus greater stability in dental implant-bone construct. Moreover, the maximum shear strains at the implant-bone interface in different planes were reduced by about 40%, in the optimized thread, compared with the initial design. CONCLUSIONS The optimized design found in this study is a buttress thread with a fine pitch, but deep thread, which keeps the mechanical stimuli in a safe range to grant an acceptable level of stability.
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Affiliation(s)
| | - Masoud Arabbeiki
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy.
| | - Gholamreza Rouhi
- Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
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Lovera-Prado K, Vanaclocha V, Atienza CM, Vanaclocha A, Jordá-Gómez P, Saiz-Sapena N, Vanaclocha L. Barbed Dental Ti6Al4V Alloy Screw: Design and Bench Testing. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2228. [PMID: 36984107 PMCID: PMC10054258 DOI: 10.3390/ma16062228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 03/01/2023] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND CONTEXT Dental implants are designed to replace a missing tooth. Implant stability is vital to achieving osseointegration and successful implantation. Although there are many implants available on the market, there is room for improvement. PURPOSE We describe a new dental implant with improved primary stability features. STUDY DESIGN Lab bench test studies. METHODS We evaluated the new implant using static and flexion-compression fatigue tests with compression loads, 35 Ncm tightening torque, displacement control, 0.01 mm/s actuator movement speed, and 9-10 Hz load application frequency, obtaining a cyclic load diagram. We applied variable cyclic loadings of predetermined amplitude and recorded the number of cycles until failure. The test ended with implant failure (breakage or permanent deformation) or reaching five million cycles for each load. RESULTS Mean stiffness was 1151.13 ± 133.62 SD N/mm, mean elastic limit force 463.94 ± 75.03 SD N, and displacement 0.52 ± 0.04 SD mm, at failure force 663.21 ± 54.23 SD N and displacement 1.56 ± 0.18 SD mm, fatigue load limit 132.6 ± 10.4 N, and maximum bending moment 729.3 ± 69.43 mm/N. CONCLUSIONS The implant fatigue limit is satisfactory for incisor and canine teeth and between the values for premolars and molars for healthy patients. The system exceeds five million cycles when subjected to a 132.60 N load, ensuring long-lasting life against loads below the fatigue limit.
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Affiliation(s)
- Keila Lovera-Prado
- CIRU-IMPLANT, S.L., Avenida Cornellà, 2-BJ, Esplugues de Llobregat, 08950 Barcelona, Spain
| | - Vicente Vanaclocha
- Department of Surgery, School of Medicine, University of Valencia, 46010 Valencia, Spain
| | - Carlos M. Atienza
- Biomechanical Engineer, Biomechanics Institute of Valencia, Polytechnic University of Valencia, 46022 Valencia, Spain
| | - Amparo Vanaclocha
- Biomechanical Engineer, Biomechanics Institute of Valencia, Polytechnic University of Valencia, 46022 Valencia, Spain
| | - Pablo Jordá-Gómez
- Hospital General Universitario de Castellón, 12004 Castellón de la Plana, Spain
| | | | - Leyre Vanaclocha
- Medius Klinik, Ostfildern-Ruit Klinik für Urologie, Hedelfinger Strasse 166, 73760 Ostfildern, Germany
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Gandhi Y, Padhye N. Comparison of insertion torque, implant stability quotient and removal torque, in two different implant designs with and without osseodensification. - An ex vivo bench top study. J Oral Biol Craniofac Res 2023; 13:249-252. [PMID: 36818026 PMCID: PMC9930143 DOI: 10.1016/j.jobcr.2023.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/30/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
Background Primary stability is an important factor in influencing the outcome of dental implants. Osteotomy modification techniques mentioned, include osteotomes for bone condensation, under-preparation of osteotomy and Osseodensification (OD). The objective of our twin arm study was to assess how two different implant designs respond to conventional osteotomy drilling and how these values obtained compare with OD. Materials and methods The study comprised a total of 80 implants inserted in pig tibia bone. Group 1a (n = 20) consisted of tapered internal implants and group 1b (n = 20) consisted of tapered pro implants, both inserted with conventional drilling. Group 2a (n = 20) consisted of tapered internal implants and group 2b (n = 20) consisted of tapered pro implants, both inserted with OD. Each implant inserted was measured for implant stability quotient (ISQ), insertion torque and removal torque. Results Group 1a showed a significantly lower ISQ, mean insertion and removal torque and as compared to Group 1b. Group 2a and 2b had comparable mean values for all the three parameters. Inter-group comparison showed a higher ISQ and insertion torque value for group 2 than group 1. Intra-group assessment showed a significantly lower value for all parameters for sub-group a than b. Conclusions OD enhances primary stability of implants in bone; but when no OD is used, the tapered pro implant design offers a better primary stability. This may be attributed to the active thread design.
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Affiliation(s)
- Yazad Gandhi
- Consultant Maxillofacial Surgeon, Saifee Hospital, Mumbai, India
| | - Ninad Padhye
- Private Practice, Mumbai, India
- Clinical Research Fellow, Queen Mary University and the London School of Medicine and Dentistry, The Royal London Dental Hospital, London, UK
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Stacchi C, Troiano G, Montaruli G, Mozzati M, Lamazza L, Antonelli A, Giudice A, Lombardi T. Changes in implant stability using different site preparation techniques: Osseodensification drills versus piezoelectric surgery. A multi-center prospective randomized controlled clinical trial. Clin Implant Dent Relat Res 2023; 25:133-140. [PMID: 36190150 PMCID: PMC10092180 DOI: 10.1111/cid.13140] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Implant stability is influenced by bone density, implant design, and site preparation characteristics. Piezoelectric implant site preparation (PISP) has been demonstrated to improve secondary stability compared with conventional drilling techniques. Osseodensification drills (OD) have been recently introduced to enhance both bone density and implant secondary stability. The objective of the present multi-center prospective randomized controlled trial was to monitor implant stability changes over the first 90 days of healing after implant bed preparation with OD or PISP. METHODS Each patient received two identical, adjacent or contralateral implants in the posterior maxilla. Following randomization, test sites were prepared with OD and control sites with PISP. Resonance frequency analysis was performed immediately after implant placement and after 7, 14, 21, 28, 60, and 90 days. Implants were then restored with single screw-retained metal-ceramic crowns and followed for 12 months after loading. RESULTS Twenty-seven patients (15 males and 12 females; mean age 63.0 ± 11.8 years) were included in final analysis. Each patient received two identical implants in the posterior maxilla (total = 54 implants). After 1 year of loading, 53 implants were satisfactorily in function (one failure in test group 28 days after placement). Mean peak insertion torque (40.7 ± 12.3 Ncm and 39.5 ± 10.2 Ncm in test and control group, respectively) and mean implant stability quotient (ISQ) value at baseline (71.3 ± 6.9 and 69.3 ± 7.6 in test and control group, respectively) showed no significant differences between the two groups. After an initial slight stability decrease, a shift to increasing ISQ values occurred after 14 days in control group and after 21 days in test group, but with no significant differences in ISQ values between the two groups during the first 90 days of healing. CONCLUSION No significant differences in either primary or secondary stability or implant survival rate after 1 year of loading were demonstrated between implants inserted into sites prepared with OD and PISP.
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Affiliation(s)
- Claudio Stacchi
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Giuseppe Troiano
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Graziano Montaruli
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | | | - Luca Lamazza
- Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, Rome, Italy
| | | | - Amerigo Giudice
- Department of Health Sciences, Magna Graecia University, Catanzaro, Italy
| | - Teresa Lombardi
- Department of Health Sciences, Magna Graecia University, Catanzaro, Italy
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Canullo L, Iacono R, Pires Godoy E, Punzo A, Cavicchia A, Gianfreda F, Bollero P. Hybrid Funnel Technique: A Novel Approach for Implant Site Preparation: A Pilot Study. Dent J (Basel) 2022; 10:dj10090157. [PMID: 36135152 PMCID: PMC9497956 DOI: 10.3390/dj10090157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 08/18/2022] [Accepted: 08/22/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Background: Different techniques and tools have been developed for implant site preparation. In this clinical scenario, Hybrid Funnel Technique (HFT), a novel osteotomy procedure, has been proposed. (2) Aim: The aim of this retrospective observational study was to consider the different responses to compression of the histological bony compartments (cancellus and cortical). HFT involves the use of multiple drills for the cortical layer preparation and of an osteotome for the osteocompaction of the cancellous bone. (3) Materials and Methods: Following computer-supported implant planning and guided surgery, 10 osteotomies with HFT were performed and 10 implants with the same length and diameter were placed in seven healthy and no daily smoking patients. Periapical X-ray and intraoral photographs were performed at baseline and after 12 months of follow-up to evaluate marginal bone level (MBL) changes and aesthetic results obtained from implant prosthetic rehabilitation. (4) Results: At 1 year of follow-up, 100% of the implants were successfully integrated, MBL change mean value was 0.17 mm ± 0.21. No differences in terms of MBL were noted between thin and thick biotypes. Pink esthetic score (PES) and white esthetic score (WES), assessed one year after definitive restoration placement, were 7.5 ± 2.3 and 8.5 ± 1.1, respectively. (5) Conclusions: Based on the findings of this preliminary clinical study, HFT has led to stability of peri-implant tissues and could represent a reliable technique for surgical preparation of the implant site.
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Affiliation(s)
- Luigi Canullo
- Department of Periodontology, University of Bern, 3012 Bern, Switzerland
| | - Roberta Iacono
- F.A.S Screening for Prevention and Oral Health, Department of Oral and Maxillofacial Science, Sapienza University of Rome, 00185 Rome, Italy
| | - Eduardo Pires Godoy
- Department of Oral Biology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo 14040-904, Brazil
| | | | - Alessio Cavicchia
- Department of Industrial Engineering, University of Rome “Tor Vergata”, 00133 Rome, Italy
| | - Francesco Gianfreda
- Department of Industrial Engineering, University of Rome “Tor Vergata”, 00133 Rome, Italy
- Correspondence:
| | - Patrizio Bollero
- Department of System Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy
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Imai M, Ogino Y, Tanaka H, Koyano K, Ayukawa Y, Toyoshima T. Primary stability of different implant macrodesigns in a sinus floor elevation simulated model: an ex vivo study. BMC Oral Health 2022; 22:332. [PMID: 35941575 PMCID: PMC9361700 DOI: 10.1186/s12903-022-02345-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 07/18/2022] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND A novel type of implant (Straumann® BLX implant) has been developed for certain stability from the mechanical and biological aspects and is expected for the implant placement in atrophic maxilla with sinus floor elevation (SFE). PURPOSE The aim of this study was to evaluate the primary stability in the implants with different macrodesigns in an SFE simulated model. Primary stabilities defined as maximum insertion torque (MIT) and implant stability quotient (ISQ) were compared between this novel type of implant and other types. MATERIALS AND METHODS Five types of Straumann® 10 mm length implants (Standard Plus; SP, Tapered Effect; TE, Bone Level; BL, Bone Level Tapered; BLT and BLX) and two types of Straumann® 6 mm length implants (SP short, BLX short) were used in this study. Each implant was inserted through 5 mm-thick porcine iliac crest blocks (an SFE simulated model). Primary stability was evaluated by using MIT and ISQ. RESULTS The mean value of MIT for BLX group showed significantly higher values than SP, BL (p < 0.01), and TE (p < 0.05) groups. The mean value of ISQ for BLX group was significantly higher than the other groups (p < 0.01). The mean value of MIT and ISQ for BLX and BLX short group were significantly higher than those for SP and SP short group (p < 0.01). CONCLUSIONS In an SFE simulated ex vivo model, BLX group showed the highest values. These results suggest that implant selection can play a crucial role in the achievement of primary stability during SFE and simultaneous implant placement.
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Affiliation(s)
- Mikio Imai
- Section of Implant and Rehabilitative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Yoichiro Ogino
- grid.177174.30000 0001 2242 4849Section of Fixed Prosthodontics, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | | | - Kiyoshi Koyano
- grid.177174.30000 0001 2242 4849Division of Advanced Dental Devices and Therapeutics, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Yasunori Ayukawa
- grid.177174.30000 0001 2242 4849Section of Implant and Rehabilitative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582 Japan ,grid.177174.30000 0001 2242 4849Section of Fixed Prosthodontics, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
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Mechanical performances, in-vitro antibacterial study and bone stress prediction of ceramic particulates filled polyether ether ketone nanocomposites for medical applications. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03180-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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de Carvalho Formiga M, Grzech-Leśniak K, Moraschini V, Shibli JA, Neiva R. Effects of Osseodensification on Immediate Implant Placement: Retrospective Analysis of 211 Implants. MATERIALS 2022; 15:ma15103539. [PMID: 35629566 PMCID: PMC9147081 DOI: 10.3390/ma15103539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/07/2022] [Accepted: 05/12/2022] [Indexed: 01/14/2023]
Abstract
Osseodensification is a new method of bone instrumentation for dental implant placement that preserves bulk bone and increases primary implant stability, and may accelerate the implant rehabilitation treatment period and provide higher success and survival rates than conventional methods. The aim of this retrospective study was to evaluate and discuss results obtained on immediate implant placement with immediate and delayed loading protocols under Osseodensification bone instrumentation. This study included private practice patients that required dental implant rehabilitation, between February 2017 and October 2019. All implants were placed under Osseodensification and had to be in function for at least 12 months to be included on the study. A total of 211 implants were included in the study, with a 98.1% total survival rate (97.9% in the maxilla and 98.5% in the mandible). For immediate implants with immediate load, 99.2% survival rate was achieved, and 100% survival rate for immediate implant placement without immediate load cases. A total of four implants were lost during this period, and all of them were lost within two months after placement. Within the limitations of this study, it can be concluded that Osseodensification bone instrumentation provided similar or better results on survival rates than conventional bone instrumentation.
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Affiliation(s)
| | - Kinga Grzech-Leśniak
- Laser Laboratory Oral Surgery Department, Medical University of Wroclaw, 50-425 Wroclaw, Poland;
| | - Vittorio Moraschini
- Department of Periodontology, Veiga de Almeida University, Rio de Janeiro 20271-020, Brazil;
| | - Jamil Awad Shibli
- Department of Periodontology and Oral Implantology, Dental Research Division, University of Guarulhos, Guarulhos 07023-040, Brazil
- Correspondence:
| | - Rodrigo Neiva
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA;
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The Use of Osseodensification for Ridge Expansion and Dental Implant Placement in Narrow Alveolar Ridges: A Prospective Observational Clinical Study. J Craniofac Surg 2022; 33:2114-2117. [PMID: 35261365 DOI: 10.1097/scs.0000000000008624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 02/19/2022] [Indexed: 11/25/2022] Open
Abstract
ABSTRACT The osseodensification (OD) drilling technique was suggested as an alveolar ridge expansion technique, so the aim of this prospective clinical study was to evaluate the amount of bone expansion obtained by the OD drilling technique and its effect on implant stability in patients with narrow alveolar ridges. The width of the alveolar ridge was measured at the crest before and after implant site preparation, whereas the implant stability was measured using Osstell Beacon implant stability quotient (ISQ). The ISQ values were recorded immediately postoperatively and after 16 weeks. Twenty-three patients were included; they received 40 implants. The mean (± standard deviation [SD]) amount of expansion was 1.29 (± 0.41) mm, and the difference between pre-expansion and post-expansion bone width was statistically significant (P < 0.001). The mean (± SD) primary stability was 73.73 (± 2.85) ISQ, whereas the mean (± SD) secondary stability was 74.83 (± 2.73) ISQ, and the difference was statistically significant (P = 0.043). The implant survival rate was 100%. It can be concluded that using the OD technique in narrow alveolar ridges resulted in bone expansion without dehiscence or fenestration and allowed simultaneous implant placement with high primary and secondary implant stability.
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The Effect of Under-Drilling and Osseodensification Drilling on Low-Density Bone: A Comparative Ex Vivo Study. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12031163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The aim of this study is to identify a method that can maximize implant primary stability (IPS) and bone density under the controlled drilling conditions of the same diameter and length in low-density bones through an ex vivo study. A total of 87 dental implants were placed with standard drilling, under-drilling, and osseodensification drilling in 13 fresh porcine sternums. The Periotest value and the implant stability quotient were measured to evaluate the primary stability. The difference in the Hounsfield unit (HU) between the hole and peripheral bone up to a distance of 1 mm was measured. Osseodensification and under-drilling technique increased the IPS, compared with conventional drilling technique with statistical significance under the drilling conditions of the same diameter and length. Osseodensification technique with the counter-clockwise direction had higher HU gaps than the standard drilling and osseodensification technique with clockwise direction. Due to the effect of bone densification, the gap of HU was increased by a minimum of 43 HU and a maximum of 180 HU. Within the limitations of this ex vivo study, it was found that the osseodensification technique with counter-clockwise direction is effective to increase IPS and bone mineral density in low-density bone.
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Alemayehu DB, Jeng YR. Three-Dimensional Finite Element Investigation into Effects of Implant Thread Design and Loading Rate on Stress Distribution in Dental Implants and Anisotropic Bone. MATERIALS 2021; 14:ma14226974. [PMID: 34832374 PMCID: PMC8624479 DOI: 10.3390/ma14226974] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 11/06/2021] [Accepted: 11/16/2021] [Indexed: 12/18/2022]
Abstract
Variations in the implant thread shape and occlusal load behavior may result in significant changes in the biological and mechanical properties of dental implants and surrounding bone tissue. Most previous studies consider a single implant thread design, an isotropic bone structure, and a static occlusal load. However, the effects of different thread designs, bone material properties, and loading conditions are important concerns in clinical practice. Accordingly, the present study performs Finite Element Analysis (FEA) simulations to investigate the static, quasi-static and dynamic response of the implant and implanted bone material under various thread designs and occlusal loading directions (buccal-lingual, mesiodistal and apical). The simulations focus specifically on the von Mises stress, displacement, shear stress, compressive stress, and tensile stress within the implant and the surrounding bone. The results show that the thread design and occlusal loading rate have a significant effect on the stress distribution and deformation of the implant and bone structure during clinical applications. Overall, the results provide a useful insight into the design of enhanced dental implants for an improved load transfer efficiency and success rate.
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Affiliation(s)
- Dawit-Bogale Alemayehu
- Department of Biomedical Engineering, National Cheng Kung University (NCKU), Tainan 70101, Taiwan;
| | - Yeau-Ren Jeng
- Department of Biomedical Engineering, National Cheng Kung University (NCKU), Tainan 70101, Taiwan;
- School of Smart Semiconductor and Sustainable Manufacturing, National Cheng Kung University (NCKU), Tainan 70101, Taiwan
- Medical Device Innovation Center (MDIC), National Cheng Kung University (NCKU), Tainan 70101, Taiwan
- Correspondence: ; Tel.: +886-933278212
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12
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Jain S, Solanki A. A dynamic surgical navigational approach for immediate implantation and transcrestal sinus augmentation. J Indian Soc Periodontol 2021; 25:451-456. [PMID: 34667392 PMCID: PMC8452165 DOI: 10.4103/jisp.jisp_581_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 12/19/2020] [Accepted: 06/20/2021] [Indexed: 11/23/2022] Open
Abstract
Real-time dynamic navigation shows various advantages over static guides in the placement of dental implants. The goal of this article is to highlight a safe and alternative approach for transcrestal sinus augmentation and immediate implantation by dynamic navigation. It elaborates and defines numerous advantages of the trace and place workflow over the fiducial technique in dynamic navigation. The usage of osseodensifying burs were shown to have higher bone-implant contact, stability, and insertion torque. Their application allows drill-tip calibration that can thus be used for dynamic navigation allowing a real-time surgical evaluation for the implant placement. This article describes a novel technique for transcrestal sinus augmentation during implant placement with osseodensifying burs using dynamic navigation.
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Affiliation(s)
- Sanjay Jain
- Chief Dental Surgeon, Dr Jain's Dental Care, Honorary Consultant, KEM Hospital, Pune, Maharashtra, India
| | - Akshita Solanki
- Chief Dental Surgeon, Dr Jain's Dental Care, Honorary Consultant, KEM Hospital, Pune, Maharashtra, India
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13
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Diker B, Diker N, Tak O. Comparison of reliability of three resonance frequency analysis devices: An in vitro study. J ORAL IMPLANTOL 2021; 48:9-14. [PMID: 33760051 DOI: 10.1563/aaid-joi-d-20-00139] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The purpose of the present study was to investigate the intra-observer and inter-observer reliability of three resonance frequency analysis (RFA) devices and to compare the implant stability quotient (ISQ) values according to implant macro design and diameter in two different bone densities. A total of 64 implants (Neoss Proactive) of varying diameters (3.5 and 4.0 mm) and implant macro design (tapered and straight) were placed in two artificial bone blocks (the density of type 2 and 3). The implant primary stability was measured using Osstell IDx, Osstell Beacon and Penguin RFA. The ISQ value of each implant was measured by two observers and recorded five times in two directions. The intra-observer and inter-observer reliability of RFA devices were evaluated. In addition to that, mean ISQ values were calculated for each RFA device to evaluate the effect of implant diameter, implant macro design, and bone density on ISQ values. ISQ values were significantly higher for implants placed within the type 2 bone than for the type 3 bone. The 4.0 mm diameter implants presented higher ISQ values than 3.5 mm diameter implants. The intra-class correlation coefficient (ICC) values for intra-observer reliability were above 0.85 for each observer and the ICC values for inter-observer reliability were 0.94, 0.93, 0.98 for Osstell IDx, Osstell Beacon and Penguin RFA, respectively. Although there was excellent inter-observer reliability with three RFA devices, the intra-observer reliability of Osstell Beacon and Penguin RFA were slightly better than Osstell IDx. Bone density and implant diameter were parameters affecting the primary stability of implants.
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Affiliation(s)
- Burcu Diker
- Okan Universitesi Department of Prosthodontics Istanbul Okan University Tuzla Campus, Faculty of Dentistry, 34959, Akfırat- Tuz TURKEY Istanbul Turkey 34959 05340113835 Okan Universitesi
| | - Nurettin Diker
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Bezmialem Vakif University, Istanbul, Turkey
| | - Onjen Tak
- Department of Prosthodontics, Faculty of Dentistry, Istanbul Okan University, Istanbul, Turkey
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Inchingolo AD, Inchingolo AM, Bordea IR, Xhajanka E, Romeo DM, Romeo M, Zappone CMF, Malcangi G, Scarano A, Lorusso F, Isacco CG, Marinelli G, Contaldo M, Ballini A, Inchingolo F, Dipalma G. The Effectiveness of Osseodensification Drilling Protocol for Implant Site Osteotomy: A Systematic Review of the Literature and Meta-Analysis. MATERIALS 2021; 14:ma14051147. [PMID: 33671038 PMCID: PMC7957527 DOI: 10.3390/ma14051147] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 02/24/2021] [Accepted: 02/25/2021] [Indexed: 12/11/2022]
Abstract
Many different osteotomy procedures has been proposed in the literature for dental implant site preparation. The osseodensification is a drilling technique that has been proposed to improve the local bone quality and implant stability in poor density alveolar ridges. This technique determines an expansion of the implant site by increasing the density of the adjacent bone. The aim of the present investigation was to evaluate the effectiveness of the osseodensification technique for implant site preparation through a literature review and meta-analysis. The database electronic research was performed on PubMed (Medline) database for the screening of the scientific papers. A total of 16 articles have been identified suitable for the review and qualitative analysis—11 clinical studies (eight on animals, three on human subjects), four literature reviews, and one case report. The meta-analysis was performed to compare the bone-to-implant contact % (BIC), bone area fraction occupied % (BAFO), and insertion torque of clockwise and counter-clockwise osseodensification procedure in animal studies. The included articles reported a significant increase in the insertion torque of the implants positioned through the osseodensification protocol compared to the conventional drilling technique. Advantages of this new technique are important above all when the patient has a strong missing and/or low quantity of bone tissue. The data collected until the drafting of this paper detect an improvement when the osseodensification has been adopted if compared to the conventional technique. A significant difference in BIC and insertion torque between the clockwise and counter-clockwise osseodensification procedure was reported, with no difference in BAFO measurements between the two approaches. The effectiveness of the present study demonstrated that the osseodensification drilling protocol is a useful technique to obtain increased implant insertion torque and bone to implant contact (BIC) in vivo. Further randomized clinical studies are required to confirm these pieces of evidence in human studies.
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Affiliation(s)
- Alessio Danilo Inchingolo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
| | - Angelo Michele Inchingolo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
| | - Ioana Roxana Bordea
- Department of Oral Rehabilitation, Faculty of Dentistry, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
- Correspondence: (I.R.B.); (F.L.); Tel.:+4-07-4491-9319 (I.R.B.); +39-087-1455-4100 (F.L.)
| | - Edit Xhajanka
- Department of Dental Prosthesis, University of Tirana, Nr 183 Tirana, Albania;
| | - Donato Mario Romeo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
- Freelancer Studio Dentistico Drs. Romeo, 75025 Policoro, Italy
| | - Mario Romeo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
- Freelancer Studio Dentistico Drs. Romeo, 75025 Policoro, Italy
| | - Carlo Maria Felice Zappone
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
- Freelancer Studio Dentistico Drs. Romeo, 75025 Policoro, Italy
| | - Giuseppina Malcangi
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
| | - Antonio Scarano
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, 66100 Chieti, Italy;
| | - Felice Lorusso
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, 66100 Chieti, Italy;
- Correspondence: (I.R.B.); (F.L.); Tel.:+4-07-4491-9319 (I.R.B.); +39-087-1455-4100 (F.L.)
| | - Ciro Gargiulo Isacco
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
- Human Stem Cells Research Center HSC of Ho Chi Minh, Ho Chi Minh 70000, Vietnam
- Embryology and Regenerative Medicine and Immunology, Pham Chau Trinh University of Medicine Hoi An, Hoi An 70000, Vietnam
| | - Grazia Marinelli
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
| | - Maria Contaldo
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Via Luigi de Crecchio, 6, 80138 Naples, Italy;
| | - Andrea Ballini
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Campus Universitario “Ernesto Quagliariello” University of Bari “Aldo Moro”, 70125 Bari, Italy;
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Francesco Inchingolo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
| | - Gianna Dipalma
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
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Comuzzi L, Tumedei M, De Angelis F, Lorusso F, Piattelli A, Iezzi G. Influence of the dental implant macrogeometry and threads design on primary stability: an in vitro simulation on artificial bone blocks. Comput Methods Biomech Biomed Engin 2021; 24:1242-1250. [PMID: 33492988 DOI: 10.1080/10255842.2021.1875219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The implant macrogeometry and thread profile represent one of the most important factors for a successful achievement of primary stability during the positioning procedure. The aim of the present investigation was to evaluate the insertion torque (IT), removal torque (RT) and Implant stability Quotient (ISQ) of two different implant macrogeometry and thread profile on solid rigid polyurethane model. Two different implants macrogeometries were tested: K2 (Group I) with 11° angle, 1.17 mm pitch and self-cutting V thread profile and K3 (Group II) implants with 30° angle, 0.71 mm pitch and spyral thread profile. A total of 120 specimens (n = 60 for each group) were positioned into different conditions of solid rigid polyurethane blocks. The insertion torque (IT), removal torque (RT) and ISQ were measured for each specimen. All specimens achieved the positioning into solid rigid polyurethane blocks for both of groups with no loss of stability. A significantly higher IT, RT and ISQ were detected in Group II (p < 0.05). In both groups the mean values for IT, RT and ISQ appeared promising from a clinical point of view. In spite of different macrogeometry and thread profile, both implant types achieved high primary stability on solid rigid polyurethane block to support the functional loading for a clinical application.
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Affiliation(s)
- Luca Comuzzi
- Private Practice, San Vendemiano-Conegliano (Treviso), Italy
| | - Margherita Tumedei
- Department of Medical, Oral and Biotechnological Sciences, University "G. D'Annunzio" of Chieti-Pescara, Chieti, Italy
| | - Francesco De Angelis
- Department of Medical, Oral and Biotechnological Sciences, University "G. D'Annunzio" of Chieti-Pescara, Chieti, Italy
| | - Felice Lorusso
- Department of Medical, Oral and Biotechnological Sciences, University "G. D'Annunzio" of Chieti-Pescara, Chieti, Italy
| | - Adriano Piattelli
- Department of Medical, Oral and Biotechnological Sciences, University "G. D'Annunzio" of Chieti-Pescara, Chieti, Italy.,Biomaterials Engineering, Catholic University of San Antonio de Murcia (UCAM), Guadalupe, Murcia, Spain.,Villaserena Foundation for Research, Città Sant'Angelo (PE), Italy
| | - Giovanna Iezzi
- Department of Medical, Oral and Biotechnological Sciences, University "G. D'Annunzio" of Chieti-Pescara, Chieti, Italy
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Juncar RI, Precup AI, Juncar M. Immediate implant-prosthetic dental rehabilitation of patients with diabetes using four immediately loaded dental implants: a pilot study. J Int Med Res 2021; 48:300060519897195. [PMID: 32228306 PMCID: PMC7133089 DOI: 10.1177/0300060519897195] [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] [Indexed: 01/19/2023] Open
Abstract
Objectives Type 2 diabetes mellitus (T2DM) involves endocrine changes that cause a persistent increase in blood glucose. Many disorders are associated with T2DM, including disorders that affect the oral cavity. Oral cavity disorders interfere with a patient’s capacity to follow a correct diet, which results in worsening systemic disease. Oral rehabilitation is necessary for patients with T2DM. Therefore, this prospective study was performed to evaluate the immediate dental rehabilitation capacity of patients with T2DM using four immediately loaded dental implants. Methods In this prospective study, four implants each were placed in four patients with T2DM and loaded within 24 hours. Demographic characteristics were assessed at baseline; systemic and oral health parameters were assessed at baseline and at 6 months after implant placement. Results The mean glycated hemoglobin (HbA1c) level was 7.05% (range, 6.8%–7.3%). The mean Implant Stability Quotient of the dental implants was 74.5 (range, 67–85). Postoperative evolution was favorable: only one implant exhibited inflammation of the prosthetic stump. Conclusions Immediate prosthetic rehabilitation using four maxillary dental implants was an effective treatment modality for patients with T2DM in this study. Larger studies are needed to confirm these findings.
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Affiliation(s)
- Raluca-Iulia Juncar
- Department of Prosthetics, Department of Dental Medicine, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
| | - Alexandru-Iosif Precup
- Oral and Maxillofacial Surgery, Department of Dental Medicine, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
| | - Mihai Juncar
- Oral and Maxillofacial Surgery, Department of Dental Medicine, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
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17
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Gaikwad AM, Joshi AA, Nadgere JB. Biomechanical and histomorphometric analysis of endosteal implants placed by using the osseodensification technique in animal models: A systematic review and meta-analysis. J Prosthet Dent 2020; 127:61-70. [PMID: 33139057 DOI: 10.1016/j.prosdent.2020.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/23/2020] [Accepted: 07/23/2020] [Indexed: 11/26/2022]
Abstract
STATEMENT OF PROBLEM Osseodensification, a counterclockwise drilling technique for the placement of endosseous implants is a popular clinical technique. However, the effect of the osseodensification technique on primary implant stability, bone-implant contact, and bone area frequency occupancy is unclear. PURPOSE The purpose of this systematic review and meta-analysis was to investigate the biomechanical and histomorphometric outcomes of endosteal implants placed by using the osseodensification technique in animal models. MATERIAL AND METHODS An electronic search through Medline/PubMed, Lilacs, and Science Direct databases, and an additional manual search of the reference list of included articles was conducted by using specific keywords and Medical Subject Headings (MeSH) terms for articles in the English language and published up to April 31, 2020. Only animal studies comparing the biomechanical and histomorphometric outcomes of endosteal implants placed by using the osseodensification and conventional drilling protocol were included. The SYstematic Review Center for Laboratory animal Experimentation (SYRCLE) tool was used to determine the risk of bias assessment, and the quality of included studies was assessed by using Animal Research: Reporting in Vivo Experiments (ARRIVE) guidelines. RESULTS Nine studies were included. The results of the meta-analysis showed that the pooled weighted mean difference of the insertion torque value for the primary implant stability of endosseous dental implants placed by using the osseodensification technique was 2.270 (95% confidence interval [CI]=1.147 to 3.393; P<.001), the weighted mean difference of the percentage of bone-implant contact at 3 weeks was 0.487 (95% CI=0.220 to 0.754; P=.114), the weighted mean difference of the percentage of bone-implant contact at 6 weeks was 0.565 (95% CI=0.219 to 0.911; P=.448), the weighted mean difference of the percentage of bone area frequency occupancy at 3 weeks was 0.679 (95% CI=0.265 to 1.093; P=.073), and the weighted mean difference of the percentage of bone area frequency occupancy at 6 weeks was 0.391 (95% CI=-0.204 to 0.986; P=.027). CONCLUSIONS Limited data from animal studies suggest that the primary implant stability, bone-implant contact, and bone area frequency occupancy significantly improved for the endosteal implants placed by using the osseodensification technique compared with conventional drilling protocol. However, additional laboratory and clinical studies are recommended to provide stronger evidence.
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Affiliation(s)
- Amit M Gaikwad
- Assistant Professor, Department of Prosthodontics and Crown & Bridge, MGM Dental College and Hospital, Navi Mumbai, Maharashtra, India.
| | - Amruta A Joshi
- Tutor, Department of Periodontics, MGM Dental College and Hospital, Navi Mumbai, Maharashtra, India
| | - Jyoti B Nadgere
- Professor and HOD, Department of Prosthodontics and Crown & Bridge, MGM Dental College and Hospital, Navi Mumbai, Maharashtra, India
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Karakaya M, Demirbaş AE. Effect of low-level laser therapy on osseointegration of titanium dental implants in ovariectomized rabbits: biomechanics and micro-CT analysis. Int J Implant Dent 2020; 6:61. [PMID: 33043397 PMCID: PMC7548265 DOI: 10.1186/s40729-020-00257-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 08/31/2020] [Indexed: 11/10/2022] Open
Abstract
PURPOSE The primary aim of this study is to assess, in an animal model, whether biostimulation of osteoporotic bone with low-level laser therapy improves the osseointegration of dental implants. MATERIAL AND METHODS Twenty-two female rabbits were randomly divided into two groups: sham-ovariectomy and bilateral-ovariectomy. Laser therapy was applied to the implants placed in the right tibial bones and was not applied to implants placed in the left tibial bones. The periotest device was used for the stability test. Periotest values were recorded after the implantation (T0) and when the animals were euthanized (T1). The removal torque test and micro-computed tomography examination were evaluated. RESULTS As a result of removal torque, the mean of ovariectomy-laser group (56.1 ± 5.1 Ncm) was higher than sham-ovariectomy group (55.4 ± 18.5 Ncm) (p = 0.9). In periotest analysis, a significant difference was found between the values of T1 and T0 in all groups, except sham-ovariectomy group (p < 0.05); and the highest difference was found in the ovariectomy-laser group. Micro-CT examination demonstrated that ovariectomy-laser group showed an increase of implant-bone contact when compared with ovariectomy (p < 0.05). CONCLUSIONS The values obtained from biomechanical tests and micro-CT in the ovariectomy-laser group were significantly higher than the ovariectomy group and achieved the values in the healthy bone.
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Affiliation(s)
- Mustafa Karakaya
- Sancaktepe Oral and Dental Health Hospital, Department of Oral and Maxillofacial Surgery, Ministry of Health, İstanbul, Turkey.
| | - Ahmet Emin Demirbaş
- Department of Oral and Maxillofacial Surgery, Erciyes University Faculty of Dentistry, Melikgazi, Kayseri, Turkey
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Alshahrani A, Al Deeb M, Alresayes S, Mokeem SA, Al-Hamoudi N, Alghamdi O, Vohra F, Abduljabbar T. Comparison of peri-implant soft tissue and crestal bone status of dental implants placed in prediabetic, type 2 diabetic, and non-diabetic individuals: a retrospective cohort study. Int J Implant Dent 2020; 6:56. [PMID: 33015750 PMCID: PMC7533277 DOI: 10.1186/s40729-020-00255-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 08/27/2020] [Indexed: 11/26/2022] Open
Abstract
Background Clinicoradiographic status of narrow-diameter implants (NDIs) among patients with prediabetes and type 2 diabetes mellitus (DM) is scarce. The aim was to address the clinicoradiographic status of NDIs placed prediabetic, type 2 diabetic, and non-diabetic individuals. In this retrospective cohort study, patients having undergone oral rehabilitation with NDI were included. The participants were divided into the following: (a) patients with prediabetes; (b) patients with poorly controlled type 2 DM; (c) patients with well-controlled type 2 DM; and (d) normoglycemic individuals. Demographic data was collected. In all groups, peri-implant plaque index (PI), gingival index (GI), probing depth (PD), and mesiodistal CBL were measured in all groups. Information related to implant dimensions, surface characteristics, insertion torque, implant geometry, duration of NDI in function, and jaw location of NDI was also recorded. Data normality was assessed and group comparisons were performed. A probability value under 0.01 was considered statistically significant. Results Eighty-three patients (20 patients had prediabetes, 22 with poorly controlled type 2 DM, 20 with well-controlled type 2 DM, and 20 self-reported non-diabetic individuals) were included. The mean HbA1c levels were significantly higher among patients with prediabetes (P < 0.01) and poorly controlled type 2 DM (P < 0.01) than patients with well-controlled type 2 DM and non-diabetic controls. Peri-implant PI, GI, PD, and mesiodistal CBL levels were significantly higher among patients with pre-diabetes (P < 0.01) and poorly controlled type 2 DM (P < 0.01) than patients with well-controlled type 2 DM and non-diabetic controls. Peri-implant PI, GI, PD, and mesiodistal CBL levels were significantly higher among patients with poorly controlled type 2 DM (P < 0.01) than patients with prediabetes. Conclusion Chronic hyperglycemia increases the risk of peri-implant diseases around NDIs.
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Affiliation(s)
- Abdullah Alshahrani
- Department of Prosthetic Dental Science, College Of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Modhi Al Deeb
- Department of Prosthetic Dental Science, College Of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Saad Alresayes
- Department of Prosthetic Dental Science, College Of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Sameer A Mokeem
- Department of Periodontics and Community Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Nawwaf Al-Hamoudi
- Department of Periodontics and Community Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Osama Alghamdi
- Department of Oral and Maxillofacial Surgery, College Of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Fahim Vohra
- Department of Prosthetic Dental Science, College Of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Tariq Abduljabbar
- Department of Prosthetic Dental Science, College Of Dentistry, King Saud University, Riyadh, Saudi Arabia.
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Javed F, Lau J, Delgado-Ruiz R, Romanos GE. In-vitro evaluation of the primary stability of multiple condensing thread designed implants placed by novice and experienced clinicians. SURGERY IN PRACTICE AND SCIENCE 2020. [DOI: 10.1016/j.sipas.2020.100014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Yamaguchi Y, Shiota M, Fujii M, Shimogishi M, Munakata M. Effects of implant thread design on primary stability-a comparison between single- and double-threaded implants in an artificial bone model. Int J Implant Dent 2020; 6:42. [PMID: 32815046 PMCID: PMC7438427 DOI: 10.1186/s40729-020-00239-1] [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: 02/13/2020] [Accepted: 06/07/2020] [Indexed: 01/02/2023] Open
Abstract
Background Primary implant stability is essential for osseointegration. To increase stability without changing the implant size, the thread length must be extended by reducing pitch, using a double-threaded implant, or reducing pitch/lead and lead angle to half that of a single-threaded implant. Materials and methods We tested the stabilities of these configurations using artificial bone. A 1.2-mm pitch, single-threaded implant (12S) was the control. We tested a 0.6-mm pitch/1.2-mm-lead double-threaded implant (06D) and a 0.6-mm pitch/lead single-threaded implant (06S). We compared stabilities by measuring insertion torque, removal torque, and the implant stability quotient (ISQ). Damage to bone tissue caused by the implants was evaluated using microscopy and morphometric analysis. Results We show that 06D and 06S significantly improved stability compared with the 12S reference. The stability of 06S was significantly greater compared with that of 06D, except for ISQ. The three implants were associated with bone tissue damage characterized by debris and voids surrounding the implant/bone interface. The 06D caused the most tissue damage, followed by 06S and then 12S. Conclusion These findings indicate that primary stability was significantly improved by changing the implant size, extending the thread length with reduced pitch/lead, and reducing the lead angle to half that of a single-threaded implant compared with a double-threaded implant.
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Affiliation(s)
- Yoko Yamaguchi
- Department of Implant Dentistry, School of Dentistry, Showa University, 2-1-1 Kitasenzoku Ota-ku, Tokyo, 145-8515, Japan.
| | - Makoto Shiota
- Oral Implantology and Regenerative Dental Medicine, Department of Masticatory Function Rehabilitation, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Masaki Fujii
- Department of Implant Dentistry, School of Dentistry, Showa University, 2-1-1 Kitasenzoku Ota-ku, Tokyo, 145-8515, Japan
| | - Masahiro Shimogishi
- Oral Implantology and Regenerative Dental Medicine, Department of Masticatory Function Rehabilitation, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Motohiro Munakata
- Department of Implant Dentistry, School of Dentistry, Showa University, 2-1-1 Kitasenzoku Ota-ku, Tokyo, 145-8515, Japan
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Osseodensification Drilling vs. Standard Protocol of Implant Site Preparation: An In Vitro Study on Polyurethane Foam Sheets. PROSTHESIS 2020. [DOI: 10.3390/prosthesis2020008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
(1) Background: The aim of the present in vitro investigation was to evaluate, on polyurethane sheets, two different drilling techniques for dental implant positioning using osteocondensing burs compared to a standard type protocol. (2) Methods: Three different implant designs (Implacil De Bortoli UN III 4 × 10 mm, Restore RBM 4 (HEX) × 10 mm; Implacil De Bortoli UN II 4 × 10 mm) were evaluated (test implant (osteocondensing drills) and control implant (standard drills)). The insertion torque (IT), the removal torque (RT) and the resonance frequency analysis (RFA) values of test and control implants inserted in different size and different density polyurethane foam models were compared for 120 experimental sites. Accordingly, 120 experimental holes were produced in different PCF polyurethane foams: 60 sites were produced in 10 PCF sheets and 60 sites in 10 PCF sheets with an additional 1 mm layer of 30 PCF. (3) Results: The IT, removal torque and RFA values were significantly higher for both of the evaluated implants, in the sites prepared with the osteocondenser drills when compared to sites prepared with standard drills (p < 0.05). The UNII and UN III showed significantly higher stability compared to the HEX implant; these differences increased drastically in the 10 PCF Polyurethane Block with the additional 1 mm cortical layer (p < 0.05). (4) Conclusions: The outcome of this investigation suggested a possible clinical application of osteocondensing burs in case of reduced bone quality and quantity in the posterior maxilla.
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Hindi AR, Bede SY. The effect of osseodensification on implant stability and bone density: A prospective observational study. J Clin Exp Dent 2020; 12:e474-e478. [PMID: 32509230 PMCID: PMC7263779 DOI: 10.4317/jced.56727] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 02/24/2020] [Indexed: 01/08/2023] Open
Abstract
Background The aims of this study were to evaluate the effect of implant site preparation in low-density bone using osseodensification method in terms of implant stability changes during the osseous healing period and peri-implant bone density using CBCT.
Material and Methods This prospective observational clinical study included 24 patients who received 46 dental implants that were installed in low-density bone using the osseodensification method. CBCT was used to measure the bone density pre- and postoperatively and implant stability was measured using Periotest® immediately after implant insertion and then after 6 weeks and 12 weeks postoperatively. The data were analyzed using paired t-test and the probability value <0.05 was considered statistically significant.
Results Of the 46 implants, 43 were osseointegrated making the early survival of the implants 93.5%. There was a significant increase in bone density postoperatively; 337.6 ±182.9 compared to 265.3 ±173.9 Hounsfield units preoperatively. The primary implant stability was -2.7 ± 2.13 Periotest values (PTV), at the 6th week it decreased significantly (p<0.0001) to become 0.7 (± 4) PTV, and at the 12th week (secondary stability) it increased significantly (p<0.0001) to become -2.1 (± 2.8) PTV. The difference between primary and secondary stability was statistically non-significant (p=0.0814).
Conclusions Osseodensification resulted in high primary stability and increased peri-implant bone density but it did not prevent the implant stability drop during the first 6 weeks after insertion of implants. Key words:Osseodensification, implant stability, low-density bone.
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Affiliation(s)
- Aseel R Hindi
- B.D.S. Department of Oral and Maxillofacial surgery, College of Dentistry, University of Baghdad Bab- Almoadham, Medical City, Baghdad, Iraq
| | - Salwan Y Bede
- B.D.S., F.I.B.M.S. Professor. Department of Oral and Maxillofacial Surgery, College of Dentistry, University of Bagh-dad Bab- Almoadham, Medical City, Baghdad, Iraq
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Romanos GE, Lau J, Delgado-Ruiz R, Javed F. Primary stability of narrow-diameter dental implants with a multiple condensing thread design placed in bone with and without osteotomes: An in vitro study. Clin Implant Dent Relat Res 2020; 22:409-414. [PMID: 32285602 DOI: 10.1111/cid.12908] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 03/23/2020] [Accepted: 03/24/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND The authors hypothesized that there is no difference in the primary stability (PS) of multiple condensing thread design (MCTD) implants placed in simulated type-IV bone with and without using osteotomes. PURPOSE This in vitro study assessed the PS of narrow-diameter dental implants with MCTD placed in simulated soft (type-IV) bone with and without using osteotomes. MATERIALS AND METHODS Sixty MCT-designed implants (diameter: 3.0 mm; length: 11.5 mm) were placed using 800 rpm drilling speed in cellular rigid polyurethane foam bone-blocks that simulated type-IV bone. Prior to placement, the implants were divided into three groups (20 implants per group) depending upon the protocol used for osteotomy preparation-Group-1: Conventional drilling (CD); Group-2: CD followed by osseous condensation using a chisel-shaped tapered osteotome with maximum diameter of 3 mm; and Group-3: CD followed by osseous condensation using a cylindrical osteotome with maximum diameter of 3 mm. Abutments were connected to all implants and PS was recorded using resonance frequency analysis (RFA) and the periotest (PTV). Group comparisons were performed using analysis and Bonferroni post-hoc adjustment tests. Level of significance was set at P < .05. RESULTS There was no statistically significant difference in the RFA values for the MCT-designed implants placed in groups 1, 2, and 3 (59.85 ± 0.72, 59.67 ± 0.76 and 59.42 ± 0.92, respectively). There was no statistically significant difference in the PTV values for MCT-designed implants in groups 1, 2, and 3 (1.655 ± 0.82, 1.405 ± 0.57, and 1.078 ± 0.63, respectively). CONCLUSION The MCTD implants with narrow diameters have a high PS in artificial soft bone in vitro. Due to the condensation effect of the thread design, there is no need for additional condensation of the peri-osteotomy bone in order to improve implant stability.
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Affiliation(s)
- Georgios E Romanos
- Department of Periodontology, Laboratory for Periodontal-, Implant-, Phototherapy (LA-PIP), School of Dental Medicine, Stony Brook University, Stony Brook, New York, USA.,Department of Oral Surgery and Implant Dentistry, School of Dentistry, Johann Wolfgang Goethe University, Frankfurt, Germany
| | - Jessica Lau
- Department of Periodontology, Laboratory for Periodontal-, Implant-, Phototherapy (LA-PIP), School of Dental Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Rafael Delgado-Ruiz
- Department of Prosthodontics and Digital Technology, School of Dental Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Fawad Javed
- Department of Periodontology, Laboratory for Periodontal-, Implant-, Phototherapy (LA-PIP), School of Dental Medicine, Stony Brook University, Stony Brook, New York, USA.,Division of Orthodontics and Dentofacial Orthopedics, Eastman Institute for Oral Health, University of Rochester, New York, New York, USA
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