1
|
AlHelal AA, Alzaid AA, Almujel SH, Alsaloum M, Alanazi KK, Althubaitiy RO, Al-Aali KA. Clinical Peri-Implant Parameters and Marginal Bone Loss for Early Mandibular Implant Overdentures: A Follow-Up of 60 Months. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:588. [PMID: 38674234 PMCID: PMC11052130 DOI: 10.3390/medicina60040588] [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: 02/28/2024] [Revised: 03/25/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024]
Abstract
Background and Objectives: Despite the identified benefits of early implant loading, studies have questioned its advantages compared to delayed loading in edentulous patients. This study aimed to evaluate clinical peri-implant parameters and marginal bone loss around early placed and loaded mandibular implant overdentures with a 60-month follow-up. Materials and Methods: In this prospective cohort study, 43 patients were enrolled to receive 86 early loading sub-crestal dental implants through prosthetic guides. Implant overdentures were supported by two isolated implant locator attachments between two mental foramens. Clinical peri-implant parameters, including plaque index (PI), bleeding index (BI), peri-implant pocket depth (PIPD), and marginal bone loss (MBL) were evaluated using standardized techniques at 1, 12, 24, 36, 48, and 60 months follow-up. At 60 months, complications associated with implant overdentures (IOD's) were noted. The mean comparison of peri-implant clinical parameters was performed through ANOVA test. A p-value of ≤0.05 was taken as significant. Results: Out of the total 43 enrolled patients, 8 patients were lost during follow-up; as a result, 35 patients completed the 5 years follow-up. The mean values of PI, BI, and PIPD increased with no statistical difference (p > 0.05). For marginal bone loss, an increase in the mean values was noted at different time intervals with statistical differences (p < 0.001). The most common complications noted were loosening of the abutment, occlusal adjustment, retentive locator loosening and replacement, and relining of the denture. Conclusions: Early placement of IODs failed to prevent bone loss over time and was associated with complications, predominantly consisting of abutment loosening, occlusal adjustments, broken retentive locator components, relining, and rebasing.
Collapse
Affiliation(s)
- Abdulaziz A. AlHelal
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, P.O. Box 21069, Riyadh 11475, Saudi Arabia;
| | - Abdulaziz A. Alzaid
- Restorative and Prosthetic Dental Science Department, College of Dentistry, King Saud Bin Abdulaziz University for Health Sciences, Riyadh 11426, Saudi Arabia; (A.A.A.); (M.A.)
- King Abdullah International Medical Research Center, Riyadh 11426, Saudi Arabia
| | - Saad H. Almujel
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, P.O. Box 21069, Riyadh 11475, Saudi Arabia;
| | - Mohammed Alsaloum
- Restorative and Prosthetic Dental Science Department, College of Dentistry, King Saud Bin Abdulaziz University for Health Sciences, Riyadh 11426, Saudi Arabia; (A.A.A.); (M.A.)
- King Abdullah International Medical Research Center, Riyadh 11426, Saudi Arabia
| | - Khalid K. Alanazi
- Conservative Dental Science Department, College of Dentistry, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia;
| | - Ramzi O. Althubaitiy
- Department of Prosthodontics, College of Dentistry, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia;
| | - Khulud A. Al-Aali
- Department of Clinical Dental Sciences, College of Dentistry, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| |
Collapse
|
2
|
Mao C, Yu W, Li G, Xu Z, Gong Y, Jin M, Lu E. Effects of immediate loading directionality on the mechanical sensing protein PIEZO1 expression and early-stage healing process of peri-implant bone. Biomed Eng Online 2024; 23:36. [PMID: 38504231 PMCID: PMC10953093 DOI: 10.1186/s12938-024-01223-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 02/23/2024] [Indexed: 03/21/2024] Open
Abstract
BACKGROUND The reduced treatment time of dental implants with immediate loading protocol is an appealing solution for dentists and patients. However, there remains a significant risk of early peri-implant bone response following the placement of immediately loaded implants, and limited information is available regarding loading directions and the associated in vivo characteristics of peri-implant bone during the early stages. This study aimed to investigate the effects of immediate loading directionality on the expression of mechanical sensing protein PIEZO1 and the healing process of peri-implant bone in the early stage. METHODS Thirty-two implants were inserted into the goat iliac crest models with 10 N static lateral immediate loading applied, followed by histological, histomorphological, immunohistochemical, X-ray microscopy and energy dispersive X-ray spectroscopy evaluations conducted after 10 days. RESULTS From evaluations at the cellular, tissue, and organ levels, it was observed that the expression of mechanical sensing protein PIEZO1 in peri-implant bone was significantly higher in the compressive side compared to the tensile side. This finding coincided with trends observed in interfacial bone extracellular matrix (ECM) contact percentage, bone mass, and new bone formation. CONCLUSIONS This study provides a novel insight into the immediate loading directionality as a potential influence factor for dental implant treatments by demonstrating differential effects on the mechanical sensing protein PIEZO1 expression and related early-stage healing processes of peri-implant bone. Immediate loading directions serve as potential therapeutic influence factors for peri-implant bone during its early healing stage.
Collapse
Affiliation(s)
- Chuanyuan Mao
- Department of Stomatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China
| | - Weijun Yu
- Department of Stomatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China
| | - Guanglong Li
- Department of Stomatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China
| | - Ziyuan Xu
- Department of Stomatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China
| | - Yuhua Gong
- Department of Stomatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China.
| | - Min Jin
- Department of Stomatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China.
| | - Eryi Lu
- Department of Stomatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China.
| |
Collapse
|
3
|
Comparative Efficacy of Different Amoxicillin Dosing Regimens in Preventing Early Implant Failure—A Systematic Review with Network Meta-Analysis. Antibiotics (Basel) 2023; 12:antibiotics12030512. [PMID: 36978379 PMCID: PMC10044278 DOI: 10.3390/antibiotics12030512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 02/23/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
This systematic review and network meta-analysis aimed to assess the comparative efficacy and safety of antibiotics to prevent early implant failure in patients undergoing dental implant surgery. Methods: The review was registered in PROSPERO [CRD42022319385]. A search was conducted for trials published in Medline, Cochrane, PubMed, and Scopus. A network meta-analysis was performed on the data from randomized controlled trials. Agents were ranked according to their effectiveness based on outcomes (implant failure, prosthetic failure, postsurgical complications, and adverse effects) using the surface under the cumulative ranking [SUCRA]. Results: A total of 15 articles were included in the quantitative analysis. When compared to the placebo, 2 g of amoxicillin given 1 h preoperatively (RR = 0.42 (95%CI: 0.27, 0.67)), 2 g of amoxicillin given 1 h preoperatively with postoperative 500 mg thrice for 5 days (RR = 0.36 (95%CI: 0.15, 0.87)), and post-operative amoxicillin with clavulanic acid 625 mg 3 times daily for 5 days (RR = 0.38 (95%CI: 0.16, 0.90)) were effective in reducing early implant failures. In addition, 2 g of amoxicillin given 1 h preoperatively (RR = 0.42 (95%CI: 0.25, 0.73)) was the only protocol that was significant in the pairwise meta-analysis results. However, sensitivity analysis, which excluded trials with a high risk of bias, showed that none of the protocols were statistically significant in reducing early implant failure. Conclusions: A single 2 g dose of preoperative amoxicillin significantly reduces early implant failure in healthy individuals. More high-quality trials are required to establish this recommendation, as the quality of this evidence is weak.
Collapse
|
4
|
Zhang W, Huang S, Ye Q, Wei D, Zhou X. Clinical efficacy of early and delayed loading implants: A systematic review and meta-analysis. J Prosthet Dent 2022:S0022-3913(22)00423-1. [PMID: 35963711 DOI: 10.1016/j.prosdent.2022.05.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/27/2022] [Accepted: 05/31/2022] [Indexed: 11/20/2022]
Abstract
STATEMENT OF PROBLEM Whether early loaded implants have similar clinical outcomes to delayed loaded implants is unclear. PURPOSE The purpose of this systematic review and meta-analysis was to compare the outcomes of early and delayed loading dental implants. MATERIAL AND METHODS Comprehensive searches of the MEDLINE, EMBASE, and Ovid databases were enriched by hand searches. Only human randomized controlled trials (RCTs) that compared the clinical efficacy of early and delayed loading were included. The survival rates and marginal bone level (MBL) changes were pooled and analyzed by risk ratios (RRs) and weighted mean differences (WMDs), respectively. The subgroup analyses, which were based on the Mantel-Haenszel and inverse-variance methods, included the types of prosthesis, implant time, occlusion, number of missing teeth, operation methods, dental position, healing methods, and type of first restoration. A funnel plot was used for heterogeneity analysis. RESULTS Eighteen trials were included from the initial 601 articles. The dental implant survival rates for the early and delayed loading were similar (P>.05). Regarding the marginal bone level changes, the 2 loading protocols also reached a comparable clinical outcome (P>.05). CONCLUSIONS Early implant loading should achieve the same clinical efficacy as the delayed loading method.
Collapse
Affiliation(s)
- Wenhao Zhang
- Doctor, Department of Stomatology, Shenzhen Baoan Women's and Children's Hospital, Jinan University, Shenzhen, PR China
| | - Sui Huang
- Doctor, Department of Pathology, Shenzhen Baoan Women's and Children's Hospital, Jinan University, Shenzhen, PR China
| | - Qi Ye
- Doctor, Department of Stomatology, Shenzhen Baoan Women's and Children's Hospital, Jinan University, Shenzhen, PR China
| | - Dixin Wei
- Doctor, Department of Stomatology, Shenzhen Baoan Women's and Children's Hospital, Jinan University, Shenzhen, PR China
| | - Xincai Zhou
- Professor, Department of Stomatology, Shenzhen Baoan Women's and Children's Hospital, Jinan University, Shenzhen, PR China.
| |
Collapse
|
5
|
Wang J, Zhang Z, Deng F. Marginal bone level change during sequential loading periods of partial edentulous rehabilitation using immediately loaded self-tapping implants: a 6.5-year retrospective study. J Adv Prosthodont 2022; 14:133-142. [PMID: 35855320 PMCID: PMC9259351 DOI: 10.4047/jap.2022.14.3.133] [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: 12/27/2021] [Revised: 05/11/2022] [Accepted: 05/24/2022] [Indexed: 11/16/2022] Open
Abstract
PURPOSE A large number of studies have suggested the practicability and predictability of immediate implant function, but few studies have reported marginal bone level changes during sequential loading periods. The purpose of this study was to evaluate the marginal bone remodeling of immediately loaded self-tapping implants both at each time point and during each loading period between two time points. MATERIALS AND METHODS The patients included in this retrospective study were treated with immediately loaded NobelSpeedy Replace implants between August 2008 and July 2009. Differences in the marginal bone level (MBL) at each time point and the marginal bone level change (ΔMBL) between two time points were analyzed with Bonferroni correction (P < .05). RESULTS Overall, 24 patients (mean age, 47.3 ± 12.8 years) with 42 immediately loaded implants and a median follow-up of 6.5 years (IQR, 67.8 months) were included. The cumulative survival rate after 10 - 12 years was 95.2%. Continuous but slow marginal bone loss was observed during long-term follow-up. MBL at both 7.5 years and 11 years was significantly lower than that at loading, 6 months, 2 years and 4 years (P < .05). No bone loss difference was found in any period before 4 years of follow up (P > .05). The loading period of 4 years to 7.5 years showed the largest ΔMBL compared to those of other time periods (P < .05). CONCLUSION Slight bone loss occurred continuously, and more radical changes of marginal bone can be observed during the period of 4-7.5 years. Thus, long-term effective follow-up of immediately loaded implants is needed.
Collapse
Affiliation(s)
- Jing Wang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Zhengchuan Zhang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Feilong Deng
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| |
Collapse
|
6
|
Pahuja SK, Negi P, Singh A, Singh GB, Rayast D, Minz M. In vivo Comparison of Crestal Bone Heights Following Implant Placement with "Flapless" and "Flap" Techniques in the Sites of Early Loaded Implants. J Pharm Bioallied Sci 2021; 13:S370-S374. [PMID: 34447112 PMCID: PMC8375825 DOI: 10.4103/jpbs.jpbs_580_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: 09/24/2020] [Revised: 09/26/2020] [Accepted: 09/26/2020] [Indexed: 11/04/2022] Open
Abstract
Purpose: The purpose was to evaluate the difference in crestal bone loss (CBL) around implants with flap and flapless methods followed by early loading. Materials and Methods: Twenty implants were placed in twenty patients – ten using flap and ten using flapless techniques. The difference in CBL was measured on standardized digital periapical radiograph taken at 0 week, 6 weeks, 12 weeks, and 6 months. Results: The present study showed the mean CBL on proximal surfaces when evaluated at intervals of 0 week, 6 weeks, 12 weeks, and 6 months for flapless method was significantly lower than with flap method the values of which were +0.07 mm against +0.26 mm on mesial side and +0.15 mm against +0.33 mm on distal side at 6 months. Conclusion: The flapless approach is a predictable procedure when patient selection and surgical technique are appropriate, and results in lesser CBL.
Collapse
Affiliation(s)
- Suhani Kukreja Pahuja
- Department of Prosthodontics, Maharishi Markandeshwar College of Dental Sciences and Research, MMU, Mullana, India
| | - Pooja Negi
- Department of Prosthodontics, Government Dental College, Shimla, Himachal Pradesh, India
| | - Anjali Singh
- Department of Pedodotics, Government Dental College and Hospital, Raipur, Chhattisgarh, India
| | - Gangesh Bahadur Singh
- Department of Orthodontics, Government Dental College and Hospital, Raipur, Chhattisgarh, India
| | - Deepa Rayast
- Department of Dental Surgery, Raipur Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Manisha Minz
- Department of Prosthodontics, Government Dental College and Hospital, Raipur, Chhattisgarh, India
| |
Collapse
|
7
|
Arghami A, Simmons D, St Germain J, Maney P. Immediate and early loading of hydrothermally treated, hydroxyapatite-coated dental implants: a 7-year prospective randomized clinical study. Int J Implant Dent 2021; 7:21. [PMID: 33751297 PMCID: PMC7943663 DOI: 10.1186/s40729-021-00299-x] [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: 07/14/2020] [Accepted: 02/08/2021] [Indexed: 11/10/2022] Open
Abstract
Background Existing research on marginal bone stability around hydroxyapatite (HA)-coated implants often lacks adequate long-term follow-up. The purpose of this randomized prospective study was to evaluate the 7-year outcome of patients with immediate and early loaded single-tooth restorations supported by implants with plasma-sprayed, partially HA-coated surfaces. Forty-two patients in need of 50 single implants were treated in in the Postgraduate Periodontics Clinic of Louisiana State University School of Dentistry. Implants were randomly divided into 2 groups: Group A was immediately loaded, and Group B was early loaded. Continuous follow-up with periodic maintenance care and radiographic evaluations was performed. The primary outcome of interest was implant survival, characterized using the Kaplan–Meier method. Secondary study outcome consisted of peri-implant crestal bone level changes. Data on age, sex, bone quality, implant location, length and diameter, and prior augmentation of the site were collected. Multiple regression analyses were conducted to determine whether the independent variables were associated with bone loss. Results One implant failed to maintain stability and was removed at 3 weeks. Thirty-four patients (14 males, 20 females with a total of 42 implants) completed the 7-year follow-up visit. Average age of evaluable patients was 52 in Group A and 55 in Group B. No significant difference was observed regarding sex and age distribution between the 2 groups. No significant difference was detected in the distribution of implant locations, types of bone, implant length, implant diameter, and augmentation status of the bone between the 2 groups. After 7 years of functioning for the 42 implants examined, implant survival rate was 100% for Group A and 95.5% for Group B. The results from this study of 50 implants showed that HA-coated Zimmer Tapered Screw-Vent Implants were clinically effective, with an overall cumulative 7-year survival rate of 98.0%. When comparing radiographic bone levels between 2-year and 7-year follow-ups, no significant differences in bone loss were found between Group A and Group B. Conclusions After 7 years in function, implants partially coated with plasma-sprayed and hydrothermally treated HA were clinically predictable when restored in occlusion immediately after or 3 weeks after implant placement.
Collapse
Affiliation(s)
- Afarin Arghami
- Department of Periodontics, Louisiana State University Health Sciences Center School of Dentistry, 1100 Florida Avenue, New Orleans, LA, 70119, USA
| | - David Simmons
- Department of Periodontics, Louisiana State University Health Sciences Center School of Dentistry, 1100 Florida Avenue, New Orleans, LA, 70119, USA
| | - Jeanne St Germain
- Department of Periodontics, Louisiana State University Health Sciences Center School of Dentistry, 1100 Florida Avenue, New Orleans, LA, 70119, USA
| | - Pooja Maney
- Department of Periodontics, Louisiana State University Health Sciences Center School of Dentistry, 1100 Florida Avenue, New Orleans, LA, 70119, USA.
| |
Collapse
|
8
|
Tabassum A, Meijer GJ, Cuijpers VMJI, Frank Walboomers X. Combined effect of undersized surgical technique and axial compression on the primary implant stability and host bone architecture. Saudi Dent J 2020; 33:283-291. [PMID: 34194192 PMCID: PMC8236550 DOI: 10.1016/j.sdentj.2020.03.004] [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: 11/07/2019] [Revised: 03/05/2020] [Accepted: 03/08/2020] [Indexed: 12/11/2022] Open
Abstract
Aim The aim of this study was to investigate the combined effect of the lateral-compression of host-bone (undersized-osteotomy-preparation) and axial-compression of host-bone (not drilling the full length of the implant) on the primary-implant-stability and the host-bone-architecture. Materials and Methods In this experimental-study, 44 dental implants (diameter-4.2 mm; length-10 mm; Dyna®) were installed in the femoral-condyles of four cadaver-goats using four different surgical approaches (11 implant/surgical approach; n = 11). Approach-1: Standard preparation according to the manufacturer's guidelines. The bone-cavity was prepared up to 10 mm in depth and 4 mm in diameter. Approach-2: Preparation up to 8 mm in depth and 4 mm in diameter. Approach-3: Preparation up to 10 mm in depth. Approach-4: The bone-cavity was prepared up to 8 mm in depth and 3.6 mm in diameter. Insertion torque (n = 11), removal torque (n = 7) and % bone-implant contact (n = 4) measurements were recorded. Bone architecture was assessed by micro-computer tomography and histological analysis (n = 4). Results For approaches 2, 3, and 4 (P < .05), insertion-torque values were significantly higher as compared to approach 1. Regarding the bone-implant-contact percentage (%BIC), approach 3 and 4 were significantly higher compared to approach 1 and 2 (P<.05). For approach 2, the %bone volume (%BV) was significantly higher as compared to approach 1 (P<.05) for the most the inner zone of host bone in proximity of the implant. Conclusion Lateral and axial compression improved the primary-implant-stability and therefore this new surgical-technique should be considered as an alternative approach especially for placing implants in low-density bone. Nevertheless, additional in vivo studies should be performed.
Collapse
Affiliation(s)
- Afsheen Tabassum
- Department of Preventive Dentistry, Imam Abdulrahman Bin Faisal University, College of Dentistry Dammam, Saudi Arabia
| | - Gert J Meijer
- Department of Implantology & Periodontology, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands.,Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands
| | - Vincent M J I Cuijpers
- Department of Biomaterials, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - X Frank Walboomers
- Department of Biomaterials, Radboud University Medical Centre, Nijmegen, the Netherlands
| |
Collapse
|
9
|
Das S, Dholam K, Gurav S, Bendale K, Ingle A, Mohanty B, Chaudhari P, Bellare JR. Accentuated osseointegration in osteogenic nanofibrous coated titanium implants. Sci Rep 2019; 9:17638. [PMID: 31819073 PMCID: PMC6901521 DOI: 10.1038/s41598-019-53884-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 10/29/2019] [Indexed: 12/24/2022] Open
Abstract
Anchoring of endosseous implant through osseointegration continues to be an important clinical need. Here, we describe the development of superior endosseous implant demonstrating enhance osseointegration, achieved through surface modification via coating of osteogenic nanofibres. The randomized bio-composite osteogenic nanofibres incorporating polycaprolactone, gelatin, hydroxyapatite, dexamethasone, beta-glycerophosphate and ascorbic acid were electrospun on titanium implants mimicking bone extracellular matrix and subsequently induced osteogenesis by targeting undifferentiated mesenchymal stem cells present in the peri-implant niche to regenerate osseous tissue. In proof-of-concept experiment on rabbit study models (n = 6), micro-computed tomography (Micro-CT), histomorphometric analysis and biomechanical testing in relation to our novel osteogenic nanofibrous coated implants showed improved results when compared to uncoated controls. Further, no pathological changes were detected during gross examination and necropsy on peri-implant osseous tissues regenerated in response to such coated implants. The findings of the present study confirm that osteogenic nanofibrous coating significantly increases the magnitude of osteogenesis in the peri-implant zone and favours the dynamics of osseointegration.
Collapse
Affiliation(s)
- Siddhartha Das
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, Maharashtra, India
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, Maharashtra, India
| | - Kanchan Dholam
- Department of Dental and Prosthetic Surgery, Tata Memorial Centre, HBNI, Mumbai, 400 012, Maharashtra, India
| | - Sandeep Gurav
- Department of Dental and Prosthetic Surgery, Tata Memorial Centre, HBNI, Mumbai, 400 012, Maharashtra, India
| | - Kiran Bendale
- Advanced Centre for Treatment, Research and Education in Cancer, Navi Mumbai, 410 210, Maharashtra, India
| | - Arvind Ingle
- Advanced Centre for Treatment, Research and Education in Cancer, Navi Mumbai, 410 210, Maharashtra, India
| | - Bhabani Mohanty
- Advanced Centre for Treatment, Research and Education in Cancer, Navi Mumbai, 410 210, Maharashtra, India
| | - Pradip Chaudhari
- Advanced Centre for Treatment, Research and Education in Cancer, Navi Mumbai, 410 210, Maharashtra, India
| | - Jayesh R Bellare
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, Maharashtra, India.
- Wadhwani Research Centre for Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, Maharashtra, India.
| |
Collapse
|
10
|
Del Giudice R, Piattelli A, Grande NM, Cataneo E, Crispino A, Petrini M. Implant insertion torque value in immediate loading: A retrospective study. Med Oral Patol Oral Cir Bucal 2019; 24:e398-e403. [PMID: 31011142 PMCID: PMC6530943 DOI: 10.4317/medoral.22845] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 03/01/2019] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND The aim of this study is to verify if the Insertion Torque Value (ITV) of 32 Ncm for immediate loading protocol (ILP), as indicated by literature, is still, with the advance in implant research, a real significant cut-off for long-term implant survival. MATERIAL AND METHODS In this retrospective study, data from 224 patients that during three years of clinical practice, were submitted to the insertion of 322 implants with immediate loading protocol, have been recorded, pooled and analyzed. Data were organized based on Insertion Torque Value (ITV): > 32 Ncm (CG) and < 32 Ncm (LTG) and two different groups of equal sample size, 161 implants each, were distinguished. Crestal bone reabsorption, and the implant failure rate were evaluated after 2-years of follow-up. RESULTS The bone reabsorption in LTG (0.49 ± 0.11 mm ) was significantly greater than CG (0.22 ± 0.04 mm), p<0.001. However, the survival rate after 2-years of follow-up was quite high and similar for both groups: 96.89% for LTG and 97.52% for CG and no statistically significant differences have been found among the two groups for the implant failure rate (p=0.455).The Odds Ratio (OR) of implant failure was of 1.258 (95% CI 0.332, 4.772), but results were not statistical significant, p=0.740. CONCLUSIONS The present study showed that although implants with ITV> 32 Ncm are still characterized by a lower crestal bone resorption, there are no statistically significant differences among the two groups for what concerning the failure rate during the 2 years of follow-up and OR. These results permit us to suppose that the cut-off of ITV >32 Ncm for immediate loading implants, could be reduced to inferior values. However further studies are necessary to indicate precise clinical guidelines.
Collapse
Affiliation(s)
- R Del Giudice
- Department of Medical Oral and Biotechnological Sciences, University of Chieti - Italy, Address: Via Vestini 31, 66013 Chieti, Italy,
| | | | | | | | | | | |
Collapse
|
11
|
Ayna M, Wessing B, Gutwald R, Neff A, Ziebart T, Açil Y, Wiltfang J, Gülses A. A 5-year prospective clinical trial on short implants (6 mm) for single tooth replacement in the posterior maxilla: immediate versus delayed loading. Odontology 2018; 107:244-253. [DOI: 10.1007/s10266-018-0378-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 07/03/2018] [Indexed: 11/30/2022]
|
12
|
Ida H, Seiryu M, Takeshita N, Iwasaki M, Yokoyama Y, Tsutsumi Y, Ikeda E, Sasaki S, Miyashita S, Sasaki S, Fukunaga T, Deguchi T, Takano-Yamamoto T. Biosafety, stability, and osteogenic activity of novel implants made of Zr 70Ni 16Cu 6Al 8 bulk metallic glass for biomedical application. Acta Biomater 2018; 74:505-517. [PMID: 29772348 DOI: 10.1016/j.actbio.2018.05.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 05/11/2018] [Accepted: 05/12/2018] [Indexed: 01/22/2023]
Abstract
Superior mechanical and chemical properties of Zr70Ni16Cu6Al8 bulk metallic glass (BMG) demonstrate its promise as a novel biomaterial for fabrication of implants. The aim of the present study was to validate mechanical, chemical, and biological properties of Zr70Ni16Cu6Al8 BMG through comparison with titanium (Ti). Our data indicated higher tensile strength, lower Young's modulus, and reduced metal ion release of Zr70Ni16Cu6Al8 BMG compared with Ti. Biosafety of bone marrow mesenchymal cells on Zr70Ni16Cu6Al8 BMG was comparable to that of Ti. Next, screw-type implant prototypes made of Zr70Ni16Cu6Al8 BMG were fabricated and inserted into rat long bones. Zr70Ni16Cu6Al8 BMG implants indicated a higher removal-torque value and lower Periotest value compared with Ti implants. In addition, higher amounts of new bone formation and osseointegration were observed around Zr70Ni16Cu6Al8 BMG implants compared with Ti implants. Moreover, gene expression analysis displayed higher expression of osteoblast- and osteoclast-associated genes in the Zr70Ni16Cu6Al8 BMG group compared with the Ti group. Importantly, loading to implants upregulated bone formation, as well as osteoblast- and osteoclast-associated gene expression in the peri-implant area. No significant difference in concentrations of Ni, Al, Cu, and Zr in various organs was shown between in the Zr70Ni16Cu6Al8 BMG and Ti groups. Collectively, these findings suggest that Zr70Ni16Cu6Al8 BMG is suitable for fabricating novel implants with superior mechanical properties, biocompatibility, stability, and biosafety compared with Ti. STATEMENT OF SIGNIFICANCE Titanium is widely used to fabricate orthopedic and dental implants. However, Titanium has disadvantages for biomedical applications in regard to strength, elasticity, and biosafety. Recently, we developed a novel hypoeutectic Zr70Ni16Cu6Al8 BMG, which has superior mechanical and chemical properties. However, the validity of Zr70Ni16Cu6Al8 BMG for biomedical application has not been cleared. The aim of the present study was to validate the mechanical, chemical, and biological properties of Zr70Ni16Cu6Al8 BMG for biomedical applications through comparison with Titanium. The present study clarifies that Zr70Ni16Cu6Al8 BMG has good mechanical properties, corrosion resistance, and osteogenic activity, which are necessary features for biomedical applications. The present study provides for the first time the superiority of Zr70Ni16Cu6Al8 BMG implants to Titanium implants for biomedical applications.
Collapse
|
13
|
Chou WC, Wang RCC, Liu C, Yang CY, Lee TM. Surface Modification of Direct-Current and Radio-Frequency Oxygen Plasma Treatments Enhance Cell Biocompatibility. MATERIALS 2017; 10:ma10111223. [PMID: 29068417 PMCID: PMC5706170 DOI: 10.3390/ma10111223] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/22/2017] [Accepted: 10/23/2017] [Indexed: 12/28/2022]
Abstract
The sand-blasting and acid etching (SLA) method can fabricate a rough topography for mechanical fixation and long-term stability of titanium implant, but can not achieve early bone healing. This study used two kinds of plasma treatments (Direct-Current and Radio-Frequency plasma) to modify the SLA-treated surface. The modification of plasma treatments creates respective power range and different content functional OH groups. The results show that the plasma treatments do not change the micron scale topography, and plasma-treated specimens presented super hydrophilicity. The X-ray photoelectron spectroscopy (XPS)-examined result showed that the functional OH content of the RF plasma-treated group was higher than the control (SLA) and DC treatment groups. The biological responses (protein adsorption, cell attachment, cell proliferation, and differentiation) promoted after plasma treatments, and the cell responses, have correlated to the total content of amphoteric OH groups. The experimental results indicated that plasma treatments can create functional OH groups on SLA-treated specimens, and the RF plasma-treated SLA implant thus has potential for achievement of bone healing in early stage of implantation.
Collapse
Affiliation(s)
- Wan-Ching Chou
- Institute of Manufacturing Information and Systems, National Cheng Kung University, Tainan 701, Taiwan.
| | - Rex C-C Wang
- Institute of Manufacturing Information and Systems, National Cheng Kung University, Tainan 701, Taiwan.
| | - Cheng Liu
- Hyperbaric Oxygen Therapy Center and Division of Plastic Surgery, Chi Mei Medical Center, Tainan 710, Taiwan.
- Department of Electrical Engineering, Southern Taiwan University of Science and Technology, Tainan 710, Taiwan.
| | - Chyun-Yu Yang
- Department of Orthopedics, National Cheng Kung University Hospital, Tainan 704, Taiwan.
| | - Tzer-Min Lee
- Institute of Oral Medicine, National Cheng Kung University Medical College, Tainan 704, Taiwan.
- School of Dentistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| |
Collapse
|
14
|
Tettamanti L, Andrisani C, Bassi MA, Vinci R, Silvestre-Rangil J, Tagliabue A. Immediate loading implants: review of the critical aspects. ACTA ACUST UNITED AC 2017; 10:129-139. [PMID: 29876038 DOI: 10.11138/orl/2017.10.2.129] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Purpose Modern dentistry have witnessed, a rapid and continuing evolution. Concerning the implant-rehabilitation protocols, they have been redefined in order to satisfy patient's increasing expectations in terms of comfort, aesthetic and shorter treatment period. The purpose of this review is to explore the concept of implant immediate loading and the indications for clinical practice. All the critical aspects that could influence the outcomes of this treatment will also be considered. Materials and methods Three protocols for implant load timing have been classified: immediate loading implants (ILI); early loading implants (ELI); and conventional loading implants (CLI). Two subclassifications point out the different loading modality: 1) Occlusal loading or Non-Occlusal loading, 2) Direct loading or Progressive loading. Micromovements have been considered, since the start of implant dentistry, one of the main risk for the success of osseointegration. The determinant and most accessible parameter to assess the primary stability is the implant insertion torque value. To achieve the necessary torque value to perform immediate loading, it is therefore important to evaluate the bone density at the implant site. Computerized tomography (CT) has been regarded as the best radiographic method to evaluate the residual bone. Results The clinical success of this technique is highly dependent on many factors: patient selection, bone quality and quantity, implant number and design, implant primary stability, occlusal loading and clinician's surgical ability. Among these, implant primary stability is undoubtedly the most important. Conclusion Studies on ILI show that successful outcome can be expected, if the previous criteria are fulfilled. It seems that ILI demonstrate a greater risk for implant failure when compared to CLI, although the survival rates were high for both the procedures. The use of different surgical procedures, type of prostheses, loading times and have very different study designs. This lack of homogeneity limits the relevance of the conclusions that can be drawn.
Collapse
Affiliation(s)
- L Tettamanti
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | | | | | - R Vinci
- Oral Surgery, Università Vita-Salute San Raffaele, Milan, Italy
| | | | - A Tagliabue
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| |
Collapse
|
15
|
Prasant MC, Thukral R, Kumar S, Sadrani SM, Baxi H, Shah A. Assessment of Various Risk Factors for Success of Delayed and Immediate Loaded Dental Implants: A Retrospective Analysis. J Contemp Dent Pract 2016; 17:853-856. [PMID: 27794158 DOI: 10.5005/jp-journals-10024-1943] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
INTRODUCTION Ever since its introduction in 1977, a minimum of few months of period is required for osseointegration to take place after dental implant surgery. With the passage of time and advancements in the fields of dental implant, this healing period is getting smaller and smaller. Immediate loading of dental implants is becoming a very popular procedure in the recent time. Hence, we retrospectively analyzed the various risk factors for the failure of delayed and immediate loaded dental implants. MATERIALS AND METHODS In the present study, retrospective analysis of all the patients was done who underwent dental implant surgeries either by immediate loading procedure or by delayed loading procedures. All the patients were divided broadly into two groups with one group containing patients in which delayed loaded dental implants were placed while other consisted of patients in whom immediate loaded dental implants were placed. All the patients in whom follow-up records were missing and who had past medical history of any systemic diseases were excluded from the present study. Evaluation of associated possible risk factors was done by classifying the predictable factors as primary and secondary factors. All the results were analyzed by Statistical Package for the Social Sciences (SPSS) software. Kaplan-Meier survival analyses and chi-square test were used for assessment of level of significance. RESULTS In delayed and immediate group of dental implants, mean age of the patients was 54.2 and 54.8 years respectively. Statistically significant results were obtained while comparing the clinical parameters of the dental implants in both the groups while demographic parameters showed nonsignificant correlation. CONCLUSION Significant higher risk of dental implant failure is associated with immediate loaded dental implants. Tobacco smoking, shorter implant size, and other risk factors play a significant role in predicting the success and failure of dental implants. CLINICAL SIGNIFICANCE Delayed loaded dental implant placement should be preferred as they are associated with decreased risk of implant failure.
Collapse
Affiliation(s)
- M C Prasant
- Department of Oral and Maxillofacial Surgery, RKDF Dental College and Research Centre, Bhopal, Madhya Pradesh, India, Phone: +919501544877, e-mail:
| | - Rishi Thukral
- Department of Trauma and Emergency, All India Institute of Medical Sciences, Bhopal, Madhya Pradesh, India
| | - Sachin Kumar
- Department of Oral and Maxillofacial Surgery, Ghaziabad, Uttar Pradesh, India
| | - Sannishth M Sadrani
- Department of Prosthodontics, Goenka Research Institute of Dental Science, Gandhinagar, Gujarat, India
| | - Harsh Baxi
- Department of Prosthodontist, Private Practitioner, Baxi Dental Care and Implant Centre, Vadodara, Gujarat, India
| | - Aditi Shah
- Department of Prosthodontist, Private Practitioner, Gandhinagar Gujarat, India
| |
Collapse
|
16
|
Liu X, Li J, Qu X, Yan W, Zhang L, Zhang S, Yang C, Zheng J. Clinical Outcomes for Systemic Corticosteroids Versus Vincristine in Treating Kaposiform Hemangioendothelioma and Tufted Angioma. Medicine (Baltimore) 2016; 95:e3431. [PMID: 27196448 PMCID: PMC4902390 DOI: 10.1097/md.0000000000003431] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
A meta-analysis was performed to evaluate the efficacy and safety of systemic corticosteroids versus those of vincristine in the treatment of kaposiform hemangioendothelioma (KHE) and tufted angioma (TA).A literature search of PubMed, Embase, and Web of Science was performed for clinical studies on systemic corticosteroid versus vincristine therapies in treating KHE/TA. Pooled relative risks (RRs) and response rate with 95% confidence intervals (CIs) were used to measure outcomes. Heterogeneity, subgroup analysis, sensitivity analysis, and publication bias analysis were performed for result evaluation.Thirteen studies, comprising 344 participants, were used in the analysis. Vincristine therapy was found to be relatively more effective than systemic corticosteroids (RRs = 0.45, 95%CI: 0.35-0.58). The result of pooled adverse reactions response rate for systemic corticosteroids was 0.31 (95%CI, 0.18-0.43), significantly higher than that for vincristine, which was 0.12 (95%CI, 0.06-0.19). In subgroup analyses, factors including mean age and race of patients, and period of follow-up were examined as possible sources of heterogeneity.This is the first meta-analysis estimating the clinical outcomes of systemic corticosteroids in comparison with those of vincristine in the treatment of KHE/TA. The results showed that vincristine was considerably more effective with lower complication rates than systemic corticosteroids; thus, vincristine could be suggested as the first-line therapy for KHE/TA.
Collapse
Affiliation(s)
- Xiaohan Liu
- From the Department of Oral Surgery (XL, CY, SZ); and Department of Oral-Maxillofacial Head and Neck Surgery (JZ, LZ), Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China; Key Laboratory of Orthopedic Implant (XQ), Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Jining Medical University (JL), Jining, Shandong Province; Pudong Institute of Preventive Medicine (WY), Fudan University, Shanghai, China
| | | | | | | | | | | | | | | |
Collapse
|