1
|
Lustosa RM, Garcez-Filho J, Seabra M, de Oliveira RP, Matarazzo F, Araújo MG. Fracture rate and risk factors associated with the fracture of narrow diameter implants: A long-term retrospective analysis. Clin Oral Implants Res 2024. [PMID: 39096072 DOI: 10.1111/clr.14334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 06/27/2024] [Accepted: 07/08/2024] [Indexed: 08/04/2024]
Abstract
OBJECTIVES The objective of this long-term retrospective study was to evaluate the fracture rate and the risk factors associated with the fracture of 3.3 mm narrow diameter implants (NDIs). MATERIALS AND METHODS A total of 524 records of patients rehabilitated with 3.3 mm NDIs between 1997 and 2015 were assessed. Data on patients, implants, and prostheses were collected, and descriptive analysis of the variables was performed. NDIs were separated into 2 groups: "fractured" and "non-fractured", and a multilevel logistic regression model was applied to identify the risk factors associated with NDI fracture. RESULTS Eighty-four patients were removed from the analysis for interrupting follow-up or presenting failures other than fractures. Of the 440 patients included (64.66 ± 13.4 years), 272 were females (61.8%), and 168 males (38.2%), and mean follow-up time was 129 ± 47.1 months. Of the 1428 NDIs, 15 (1.05%) in 9 patients (2.04%) fractured during the studied period. Ten fractures (66.66%) happened in 6 patients (66.66%) showing signs of parafunction. NDI with modified sandblasted, large grit, acid-etched surface was the only implant variable to show a protective statistical significance (p = .0439). CONCLUSIONS NDI fracture was a rare event in the studied sample. NDIs manufactured with modified sandblasted, large grit, acid-etched surface may provide extra protection against NDI fracture. Patient-specific factors and implant characteristics should be carefully considered to limit the risk of fracture of 3.3 mm NDIs.
Collapse
Affiliation(s)
- Romulo M Lustosa
- Department of Dentistry, State University of Maringá, Maringá, Brazil
| | | | | | - Ricardo Puziol de Oliveira
- Department of Statistics, State University of Maringá, Maringá, Brazil
- Department of Statistics, São Paulo State University (Unesp), Presidente Prudente, Brazil
| | - Flávia Matarazzo
- Department of Dentistry, State University of Maringá, Maringá, Brazil
| | - Maurício G Araújo
- Department of Dentistry, State University of Maringá, Maringá, Brazil
| |
Collapse
|
2
|
Volp Junior LC, Matarazzo F, Dias DR, de Oliveira RP, Sábio S, Araújo MG. The effect of the interproximal contour of single external hexagon implant restorations on the prevalence of peri-implantitis: A retrospective study. J Prosthodont 2024; 33:655-662. [PMID: 38487989 DOI: 10.1111/jopr.13835] [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: 08/29/2023] [Accepted: 02/11/2024] [Indexed: 08/10/2024] Open
Abstract
PURPOSE The objective of this retrospective study was to evaluate the effect of the interproximal contour of single external hexagon implant restorations on the prevalence of peri-implantitis. MATERIAL AND METHODS Records of 96 patients and 148 external hexagon (EH) implants with time in function ranging from 1 to 17 years were included in the study. The most recent clinical and radiographic data were collected from records and the prevalence of peri-implantitis was defined according to the 2017 World Workshop on the Classification of Periodontal and Peri-implant Diseases and Conditions. Marginal bone level (MBL), emergence angle (EA), emergence profile (EP), and crown/implant platform horizontal ratio (CIHR) were obtained from periapical radiographs. Dichotomous variables at the patient- and implant level were compared with association tests. Mann-Whitney U-Test was performed to compare continuous quantitative values between the studied groups. Binomial logistic regression was conducted to identify risk indicators associated with the peri-implantitis event at the patient- and implant level, with the significance level set at 5% for all tests. RESULTS Nineteen patients (19.2%) and 24 implants (16.2%) with a mean time in function of 5.0 ± 4.7 years were classified as having peri-implantitis. No statistically significant differences concerning gender, mean age, implant location in the jaw, or time in function were observed between patients with or without peri-implantitis (p > 0.05). Of 24 implants with peri-implantitis 10 (41.7%) displayed EA ≤ 30° (16.4%) while 14 (58.3%) presented EA > 30° with no statistical difference between the groups (p > 0.05). No statistically significant associations were identified between EA, EP, or CIHR and the prevalence of peri-implantitis. CONCLUSION The findings seem to indicate that the EA, EP, and CIHR of single restorations over external hexagon implants are not associated with the presence of peri-implantitis. However, prospective studies with larger samples are required to better ascertain such an association in the long term.
Collapse
Affiliation(s)
| | - Flávia Matarazzo
- Department of Dentistry, State University of Maringá, Maringá, Brazil
| | - Debora Reis Dias
- Department of Dentistry, State University of Maringá, Maringá, Brazil
| | | | - Sérgio Sábio
- Department of Dentistry, State University of Maringá, Maringá, Brazil
| | - Maurício G Araújo
- Department of Dentistry, State University of Maringá, Maringá, Brazil
| |
Collapse
|
3
|
Assaf A, Saad M, Hijawi S. Use of narrow-diameter implants in the posterior segments of the jaws: A retrospective observational study of 2 to 11 years. J Prosthet Dent 2023; 130:840-848. [PMID: 35190196 DOI: 10.1016/j.prosdent.2022.01.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 12/30/2021] [Accepted: 01/04/2022] [Indexed: 12/14/2022]
Abstract
STATEMENT OF PROBLEM The placement of narrow-diameter implants (NDIs) in the posterior region is still debated in view of the high biomechanical risks in these areas. PURPOSE The purpose of this retrospective observational study was to evaluate the success and survival rates of NDIs restored with fixed prostheses in the posterior region (primary outcome) and analyze whether splinting multiple units (prosthesis design) affects the biological and mechanical complications (secondary outcome). MATERIAL AND METHODS Dental records from 2 private clinics were reviewed for NDIs in the posterior region installed between 2009 and 2018. Ninety study participants (58 women and 32 men) aged between 21 and 84 years (mean age 49.9 years) were recalled for the assessment of implant survival and success of 160 NDIs previously provided for partial posterior edentulism associated with moderate horizontal bone loss or reduced interradicular space (105 premolars and 55 molars). The implants were restored with metal-ceramic single crowns or splinted multiple-unit prostheses, either screw-retained or cemented on custom (n=100) or stock titanium abutments (n=60). Peri-implant probing depth (PPD), bleeding on probing (BOP), bone quality, type of edentulism, and patient satisfaction were scored. The chi-squared test for independence and 2-sample Welch t test were performed for statistical analysis (α=.05). RESULTS The overall success rate was 89.37%. One implant had been removed 4 years after loading, another after 9 years, yielding a cumulative survival rate of 98.75%. Fourteen implants exhibited PPD > 5 mm. One implant and 1 abutment screw fractured, and 16 restorations demonstrated porcelain chipping. The chi-squared test showed no significant relationship between prosthetic design and complications whether biological (P=.087) or mechanical (P=.805). Eighty-two percent of patients were satisfied with esthetics, 76% with function, 85% with total duration of treatment, and 90% with overall treatment cost. CONCLUSIONS Within the limitations of this retrospective study, NDIs may be considered a reliable option to replace posterior teeth. The prosthetic design had no significant impact on biological or mechanical complications.
Collapse
Affiliation(s)
- André Assaf
- Clinical Associate Professor, Department of Prosthodontics, Faculty of Dentistry, Beirut Arab University, Beirut, Lebanon; Former Head, Dental Biomaterials and Technology Unit, Faculty of Dentistry, Lebanese University, Beirut, Lebanon.
| | | | | |
Collapse
|
4
|
Cao R, Chen B, Xu H, Fan Z. Clinical outcomes of titanium-zirconium alloy narrow-diameter implants for single-crown restorations: a systematic review and meta-analysis. Br J Oral Maxillofac Surg 2023; 61:403-410. [PMID: 37331853 DOI: 10.1016/j.bjoms.2023.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 02/26/2023] [Accepted: 05/07/2023] [Indexed: 06/20/2023]
Abstract
Evidence is limited on whether titanium-zirconium alloy, narrow-diameter implants (Ti-Zr NDIs) have promising clinical outcomes when used to support single crowns. The purpose of this systematic review and meta-analysis was to evaluate clinical evidence, including survival rates, success rates, and marginal bone loss (MBL) on Ti-Zr NDIs that support single crowns. An extensive search was performed in the databases of PubMed/MEDLINE, Scopus, Embase, and the Cochrane Library for studies published in English up to April 2022. Only peer-reviewed clinical studies with at least 10 patients and a follow-up time of at least 12 months were included. Risk of bias in each study was assessed and data extraction was carried out independently by two reviewers. The outcome variables were survival rates, success rates, and MBL. The search returned 779 results. Eight studies were identified for qualitative analysis and seven for quantitative synthesis. Overall, a total of 256 Ti-Zr NDIs were included. Cumulative implant survival rates and success rates were 97.5% (95% confidence interval (CI): 94.5% to 98.9%) and 97.2% (95% CI: 94.2% to 98.7%), respectively, over a maximum follow-up period of 36 months, with no difference between Ti-Zr NDIs and commercial pure titanium (cpTi) implants. Cumulative mean (SD) MBL was 0.44 (0.04) mm (95% CI: 0.36 to 0.52) after one year. Meta-analysis of MBL indicated a mean difference of 0.02 mm (95% CI: -0.23 to 0.10), with no differences between Ti-Zr NDIs and cpTi implants. Short-term results of Ti-Zr NDIs for single-crown restorations are quite promising, although the number of published studies and follow-up periods are insufficient to determine the real benefit for single crowns. Long-term, follow-up clinical studies are needed to verify the excellent clinical performance of Ti-Zr NDIs.
Collapse
Affiliation(s)
- Rongkai Cao
- School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, PR China
| | - Beibei Chen
- School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, PR China
| | - Hui Xu
- School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, PR China
| | - Zhen Fan
- Department of Oral Implantology, School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, PR China.
| |
Collapse
|
5
|
Kadkhodazadeh M, Amid R, Moscowchi A, Lakmazaheri E. Short-term and long-term success and survival rates of implants supporting single-unit and multiunit fixed prostheses: A systematic review and meta-analysis. J Prosthet Dent 2023:S0022-3913(23)00008-2. [PMID: 36781339 DOI: 10.1016/j.prosdent.2022.12.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 12/29/2022] [Accepted: 12/29/2022] [Indexed: 02/13/2023]
Abstract
STATEMENT OF PROBLEM Whether placing implants to replace each missing tooth or using implant-supported fixed partial dentures provides better outcomes is unclear. PURPOSE The purpose of this systematic review and meta-analysis was to assess the success and survival rates of implants supporting single-unit and multiunit fixed prostheses by using conventional protocols for placement and loading in short- and long-term follow-ups. MATERIAL AND METHODS An electronic search was conducted in PubMed, Scopus, and Web of Science for studies published up to March 17, 2022. Comparative studies that reported the success or survival rates of both single-unit and splinted multiunit prostheses were considered for qualitative and quantitative analyses. RESULTS A total of 68 publications comprising 11 271 implants were included. Compared with the single prostheses, the splinted multiunit group showed no significant differences in implant success rates in the short-term (risk difference=-0.004; 95% confidence interval (CI)=-0.033 to 0.025; P=.780) and long-term (risk difference=0.003; 95% confidence interval (CI)=-0.029 to 0.034; P=.874) follow-ups. Significant statistical differences were also not found in terms of the survival rates of the 2 groups (short-term risk difference=-0.004; 95% CI=-0.031 to 0.023; P=.779, long-term risk difference=-0.002; 95% CI=-0.029 to 0.025; P=.887). CONCLUSIONS Implants supporting single-unit or splinted multiunit prostheses seem to be a predictable treatment in terms of survival and success over short and long periods. Nonetheless, it seems that cantilever and nonsplinted multiunit prostheses should be used with more caution.
Collapse
Affiliation(s)
- Mahdi Kadkhodazadeh
- Professor, Research Institute for Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Professor, Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Amid
- Associate Professor, Research Institute for Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Associate Professor, Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Anahita Moscowchi
- Assistant Professor, Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ehsan Lakmazaheri
- Undergraduate student, Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
6
|
Zhang XM, Liu BL, Qian SJ, Shi JY, Zhang X, Lai HC. Clinical evaluation of narrow-diameter implants versus standard-diameter implants with lateral bone augmentation in posterior jaws: Three-year results of a randomized controlled trial. Clin Oral Implants Res 2022; 33:1245-1253. [PMID: 36203410 DOI: 10.1111/clr.14006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/31/2022] [Accepted: 08/28/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND The aim of this study was to compare the 3-year clinical outcomes of narrow-diameter implants (NDI) with standard-diameter implants (SDI) in conjunction with lateral bone augmentation in atrophic posterior jaws. MATERIALS AND METHODS Fifty patients were included and randomly assigned into two groups: Patients in Group 1 received NDI (Ø3.5 mm); patients in Group 2 received SDI (Ø4.3 mm) with simultaneous lateral bone augmentation. Implant survival rates, complications, crestal bone loss, peri-implant conditions, treatment cost, and patient satisfaction were compared. RESULTS Three patients dropped out the follow-up. No implant loss was observed. The difference in technical complication rates between the two groups was 3.8% (95% CI: -13.7% to 21.3%). No significant differences in crestal bone loss were found between two groups at 3-year follow-up (0.55 ± 0.76 vs 0.41 ± 0.41 mm, p = .429). A total of 20.8% (5/24) of NDI were diagnosed with mucositis and 8.3% (2/24) with peri-implantitis. A total of 17.4% (4/23) of SDI showed mucositis and (1/23) 4.3% showed peri-implantitis. The total cumulative cost of treatment per patient in Group 1 (2849.6 USD, 95% CI: 2726.8-2972.4) was significantly lower than that in Group 2 (3581.4 USD, 95% CI, 3460.9-3701.9) over the 3-year follow-up (p < .01). The patient satisfaction rating of operation was significantly higher in Group 1 (85.42 ± 7.41 vs 80.48 ± 7.95, p = .033). DISCUSSION NDI yielded favorable implant survival, acceptable technical and biological complications, and high patient satisfaction supporting single crowns in the atrophic posterior region after 3-year follow-up. NDI might be a reasonable alternative in horizontally deficient posterior jaws. TRIAL REGISTRATION Clinicaltrials.gov identifier: ChiCTR1800020426.
Collapse
Affiliation(s)
- Xiao-Meng Zhang
- Department of Oral and Maxillo-Facial Implantology, National Center for Stomatology; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Bei-Lei Liu
- Department of Oral and Maxillo-Facial Implantology, National Center for Stomatology; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Shu-Jiao Qian
- Department of Oral and Maxillo-Facial Implantology, National Center for Stomatology; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Jun-Yu Shi
- Department of Oral and Maxillo-Facial Implantology, National Center for Stomatology; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Xiao Zhang
- Department of Oral and Maxillo-Facial Implantology, National Center for Stomatology; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Hong-Chang Lai
- Department of Oral and Maxillo-Facial Implantology, National Center for Stomatology; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
7
|
Xiao W, Chen Y, Chu C, Dard MM, Man Y. Influence of implant location on titanium-zirconium alloy narrow-diameter implants: A 1-year prospective study in smoking and nonsmoking populations. J Prosthet Dent 2021; 128:159-166. [PMID: 33551139 DOI: 10.1016/j.prosdent.2020.09.051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 09/21/2020] [Accepted: 09/21/2020] [Indexed: 02/05/2023]
Abstract
STATEMENT OF PROBLEM Titanium-zirconium (Ti-Zr) alloy (Roxolid) narrow-diameter implants (NDIs) have been widely used for implant-supported prostheses in anterior and posterior regions in the jaws. However, the relationship between implant location and clinical outcome remains unclear. PURPOSE The purpose of this clinical study was to evaluate and compare the clinical and radiographic outcomes of NDIs placed in different regions of the jaws in both smokers and nonsmokers. MATERIAL AND METHODS Eighty-four participants scheduled to receive NDIs for tooth rehabilitation were included, and the inserted NDIs were divided into 3 groups depending on their locations: implants used to restore anterior teeth, implants used to restore premolars, and implants used to restore molars. Crestal bone loss (CBL), implant survival and success rates, bleeding on probing (BOP), and pocket probing depth (PPD) were evaluated 6 and 12 months after implant loading (α=.017 for implant survival and success rates after Bonferroni correction, α=.05 for other parameters). RESULTS Statistical analysis of 6- and 12-month CBL of all participants presented no statistically significant difference among the 3 groups. For smokers, the molar group presented significantly more CBL than the premolar group (0.90 ±0.94 versus 0.16 ±0.27 mm, P=.027) at the 6-month examination. The implant survival rates were 95.65%, 100%, and 100% for anterior, premolar, and molar regions, respectively (P=.283). No statistically significant difference was observed regarding periodontal parameters (P>.05). CONCLUSIONS Implant location has no influence on the clinical and radiographic parameters of Ti-Zr NDIs placed in a nonsmoking population. However, the combination of posterior location and smoking may induce higher risk of crestal bone loss. Caution should be taken when restoring molars for smokers with NDIs.
Collapse
Affiliation(s)
- Wenlan Xiao
- Graduate student, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases &Department of Oral Implantology, West China School of Stomatology, Sichuan University, Chengdu, PR China
| | - Yaqian Chen
- Graduate student, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China
| | - Chenyu Chu
- Graduate student, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China
| | - Michel M Dard
- Global Medical Director, Medical Affairs, Straumann Group, Basel, Switzerland; Associate Professor of Dental Medicine, Section of Oral, Diagnostic and Rehabilitation Sciences, Columbia University, College of Dental Medicine, New York, NY
| | - Yi Man
- Professor, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China.
| |
Collapse
|
8
|
Pérez R, Gargallo J, Altuna P, Herrero-Climent M, Gil F. Fatigue of Narrow Dental Implants: Influence of the Hardening Method. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E1429. [PMID: 32245138 PMCID: PMC7143173 DOI: 10.3390/ma13061429] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/17/2020] [Accepted: 03/20/2020] [Indexed: 12/27/2022]
Abstract
The use of narrow titanium dental implants (NDI) for small ridges, reduced interdental space, or missing lateral incisors can be a viable option when compared to the conventional wider dental implants. Furthermore, in many cases, standard diameter implant placement may not be possible without grafting procedures, which increases the healing time, cost, and morbidity. The aim of this study was to analyze the mechanical viability of the current narrow implants and how narrow implants can be improved. Different commercially available implants (n = 150) were tested to determine maximum strength, strain to fracture, microhardness, residual stress, and fatigue obtaining the stress-number of cycles to fracture (SN) curve. Fractography was studied by scanning electron microscopy. The results showed that when the titanium was hardened by the addition of 15% of Zr or 12% cold worked, the fatigue limit was higher than the commercially pure grade 4 Ti without hardening treatment. Grade 4 titanium without hardening treatment in narrow dental implants can present fractures by fatigue. These narrow implants are subjected to high mechanical stresses and the mechanical properties of titanium do not meet the minimal requirements, which lead to frequent fractures. New hardening treatments allow for the mechanical limitations of conventional narrow implants to be overcome in dynamic conditions. These hardening treatments allow for the design of narrow dental implants with enhanced fatigue life and long-term behavior.
Collapse
Affiliation(s)
- R.A. Pérez
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya. C/ Josep Trueta s/n. Sant Cugat del Valles, 08195 Barcelona, Spain;
| | - J. Gargallo
- Faculty of Dentistry, Universitat Internacional de Catalunya, C/ Josep Trueta s/n. Sant Cugat del Valles, 08195 Barcelona, Spain; (J.G.); (P.A.)
| | - P. Altuna
- Faculty of Dentistry, Universitat Internacional de Catalunya, C/ Josep Trueta s/n. Sant Cugat del Valles, 08195 Barcelona, Spain; (J.G.); (P.A.)
| | - M. Herrero-Climent
- Master Periodoncia, School of Dentistry, University of Seville, 41009 Seville, Spain;
| | - F.J. Gil
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya. C/ Josep Trueta s/n. Sant Cugat del Valles, 08195 Barcelona, Spain;
- Faculty of Dentistry, Universitat Internacional de Catalunya, C/ Josep Trueta s/n. Sant Cugat del Valles, 08195 Barcelona, Spain; (J.G.); (P.A.)
| |
Collapse
|
9
|
Fracture and Fatigue of Titanium Narrow Dental Implants: New Trends in Order to Improve the Mechanical Response. MATERIALS 2019; 12:ma12223728. [PMID: 31726659 PMCID: PMC6888446 DOI: 10.3390/ma12223728] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 10/18/2019] [Accepted: 10/24/2019] [Indexed: 11/17/2022]
Abstract
Sixty-four fractured commercially pure titanium (cp-Ti) narrow dental implants (NDIs) with similar macrogeometry and connection designs were studied after different implantation times in humans in order to determine their reliability and to evaluate the causes of the fracture. These NDIs were compared with other similar implants, made with alloyed titanium with 15% Zr and with 12% strained titanium. Original implants were tested under static and fatigue conditions, simulating the tri-axial loads in the mouth by means of a Bionix hydraulic test machine. Fractography was studied using field-emission scanning electron microscopy (FSEM). The results showed that cp-Ti NDI exhibits low strength for mechanical cycling, and the alloyed Ti and strained titanium increase the mechanical strength, guaranteeing long term mechanical behavior. NDIs fractured due to fatigue, and, in some cases, the presence of cracks in the original NDIs quickly led to fracture. These cracks were attributed to plastic deformation during machining were found to be exacerbated due to acid etching in the passivation process. All cases of fracture were cp-Ti dental implants due to the low fatigue limit. The results show that, when titanium is alloyed or cold-worked, the fatigue limit is higher than cp-Ti. This in vitro research will help clinicians to select a better NDI system for safer treatment.
Collapse
|
10
|
Ghensi P, Tonetto G, Soldini C, Bettio E, Mortellaro C, Soldini C. Dental Implants With a Platform-Switched Morse Taper Connection and an Osteo Growth Induction Surface. J Craniofac Surg 2019; 30:1049-1054. [PMID: 30394965 DOI: 10.1097/scs.0000000000004795] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
AIM The aim of this study was to analyze the clinical outcomes after using an innovative implant system characterized by a modern platform-switched Morse taper connection and an osteo growth induction titanium surface (a particular type of SLA surface). Peri-implant bone loss (PBL) and implant success rate were examined after a 1- to 3-year follow-up. METHODS The study was conducted as a cross-sectional analysis on all patients treated from January 2011 to December 2014 using CLC CONIC implants. Implants were divided into 3 main groups, based on the duration of the follow-up (1 year, 2 years, and 3 years), then subgrouped by diameter, length, and type of prosthetic rehabilitation to compare differences in PBL. X-rays were taken at the time of surgery, at prosthetic loading, at 1 year, and then annually thereafter. Previously-established success criteria were used to assess the implants. Frequency analyses and comparisons between the means (with 95% CI) were conducted for the statistical analysis of the data collected. RESULTS One hundred twenty patients met inclusion and exclusion criteria, and completed the follow-up, and were thus eligible for the study, with a total of 261 CLC CONIC implants. The mean follow-up was 22.45 months. No implants failed, giving an overall success rate of 100%. The average PBL at 1-year follow-up was 0.047 mm, at 2 years it was 0.128 mm, and at 3 years it was 0.236 mm. CONCLUSIONS The CLC CONIC implant system had a high success rate after 1 to 3 years of follow-up, in line with previous reports in the scientific literature. Combining platform switching with the Morse taper connection enabled stable bone levels to be achieved in the short to medium term.
Collapse
Affiliation(s)
- Paolo Ghensi
- Centre for Integrative Biology (CIBIO), University of Trento, Trento.,IDIS (Institute for Dental & Implant Studies), Vicenza
| | | | - Costanza Soldini
- IDIS (Institute for Dental & Implant Studies), Vicenza.,Department of Public Health, Experimental and Forensic Medicine, University of Pavia, Pavia
| | - Elia Bettio
- Department of Neurosciences, University of Padova, Padova
| | - Carmen Mortellaro
- Department of Health Sciences, "A. Avogadro" University of Eastern Piedmont, Novara
| | - Claudio Soldini
- IDIS (Institute for Dental & Implant Studies), Vicenza.,Department of Neurosciences, University of Padova, Padova.,CLC Scientific, Vicenza, Italy
| |
Collapse
|
11
|
Schiegnitz E, Al‐Nawas B. Narrow‐diameter implants: A systematic review and meta‐analysis. Clin Oral Implants Res 2018; 29 Suppl 16:21-40. [DOI: 10.1111/clr.13272] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2018] [Indexed: 01/19/2023]
Affiliation(s)
- Eik Schiegnitz
- Department of Oral and Maxillofacial Surgery, Plastic Surgery University Medical Centre of the Johannes Gutenberg‐University Mainz Mainz Germany
| | - Bilal Al‐Nawas
- Department of Oral and Maxillofacial Surgery, Plastic Surgery University Medical Centre of the Johannes Gutenberg‐University Mainz Mainz Germany
| |
Collapse
|
12
|
Cruz RS, Lemos CAA, Oliveira HFF, de Souza Batista VE, Pellizzer EP, Verri FR. Comparison of the Use of Titanium–Zirconium Alloy and Titanium Alloy in Dental Implants: A Systematic Review and Meta-Analysis. J ORAL IMPLANTOL 2018; 44:305-312. [DOI: 10.1563/aaid-joi-d-17-00233] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to compare the values of bone-implant contact (BIC) and removal torque (RTQ) reported in different animal studies for titanium–zirconium (TiZr) and titanium (Ti) dental implants. This review has been registered at PROSPERO under number CRD42016047745. We undertook an electronic search for data published up until November 2017 using the PubMed/Medline, Embase, and The Cochrane Library databases. Eligibility criteria included in vivo studies, comparisons between Ti and TiZr implants in the same study, and studies published in English that evaluated BIC and RTQ. After inclusion criteria, 8 studies were assessed for eligibility. Of the 8 studies, 7 analyzed BIC outcome and 3 analyzed RTQ outcome. Among such studies, 6 studies were considered for meta-analysis of quantitative for BIC and 2 studies for RTQ. There was no significant difference for BIC analysis (P = .89; random ration [RR]: −0.21; 95% confidence interval [CI]: −3.14 to 2.72). The heterogeneity of the primary outcome studies was considered low (7.19; P = .21; I2: 30%). However, the RTQ analysis showed different results favoring the TiZr dental implants (P = .001; RR: 23.62; 95%CI: 9.15 to 38.10). Low heterogeneity was observed for RTQ (χ2: 1.25; P = .26; I2: 20%). Within the limitations of this study, there was no difference between TiZr and Ti alloys implants in terms of BIC. However, TiZr implants had higher RTQ than Ti alloys.
Collapse
Affiliation(s)
- Ronaldo Silva Cruz
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP – Univ Estadual Paulista, Aracatuba Dental School, Sao Paulo, Brazil
| | - Cleidiel Aparecido Araujo Lemos
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP – Univ Estadual Paulista, Aracatuba Dental School, Sao Paulo, Brazil
| | - Hiskell Francine Fernandes Oliveira
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP – Univ Estadual Paulista, Aracatuba Dental School, Sao Paulo, Brazil
| | - Victor Eduardo de Souza Batista
- Department of Prosthodontics, Presidente Prudente Dental School, University of Western São Paulo - UNOESTE, Presidente Prudente, Brazil
| | - Eduardo Piza Pellizzer
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP – Univ Estadual Paulista, Aracatuba Dental School, Sao Paulo, Brazil
| | - Fellippo Ramos Verri
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP – Univ Estadual Paulista, Aracatuba Dental School, Sao Paulo, Brazil
| |
Collapse
|
13
|
Trbakovic A, Bongenhielm U, Thor A. A clinical and radiological long-term follow-up study of narrow diameter implants in the aesthetic area. Clin Implant Dent Relat Res 2018; 20:598-605. [DOI: 10.1111/cid.12627] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 04/14/2018] [Accepted: 04/17/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Amela Trbakovic
- Department of Surgical Sciences, Plastic & Oral and Maxillofacial Surgery; Uppsala University; Uppsala SE-751 85 Sweden
| | - Ulf Bongenhielm
- Uppsala & Västerås Käkkirurgiska Centrum, Vaksalagatan 8; Uppsala 753 20 Sweden
| | - Andreas Thor
- Department of Surgical Sciences, Plastic & Oral and Maxillofacial Surgery; Uppsala University; Uppsala SE-751 85 Sweden
| |
Collapse
|
14
|
Badran Z, Struillou X, Strube N, Bourdin D, Dard M, Soueidan A, Hoornaert A. Clinical Performance of Narrow-Diameter Titanium-Zirconium Implants: A Systematic Review. IMPLANT DENT 2018; 26:316-323. [PMID: 28114266 DOI: 10.1097/id.0000000000000557] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE Implant-supported prosthetic rehabilitations are in constant augmentation in everyday dental practice. This is largely due to increasing demand from patients for fixed or implant-stabilized prosthesis, although they are frequently reticent to complex preimplant bone augmentation surgeries, whenever bone volume is lacking. Narrow-diameter implants (NDI; ≤3.5 mm) have been developed to offer relatively simple implant solutions in challenging bone-deficient sites. However, concerns regarding their mechanical properties have been raised. Special titanium-zirconium material (Ti-Zr), with superior mechanical resistance, compared with pure titanium alloys has been introduced into the market. The purpose of this systematic review was to determine the available data on clinical performance of Ti-Zr NDI. MATERIALS AND METHODS A literature search of all available clinical articles dealing with Ti-Zr NDI has been carried out. After including only prospective clinical trials, 14 papers were retrieved for thorough reviewing. CONCLUSION Short-term results from preliminary clinical reports are quite promising, although the number of published studies and the follow-up periods are still insufficient to determine the real benefit of this hybrid material compared with titanium, especially when using NDI.
Collapse
Affiliation(s)
- Zahi Badran
- *Clinical Instructor, Department of Oral Implantology, Faculty of Dental Surgery, University of Nantes, Nantes, France; Associate Professor, Department of Periodontology, Faculty of Dental surgery, (Inserm U791/UIC 11) CHU de Nantes, France. †Clinical Instructor, Department of Oral Implantology, Faculty of Dental Surgery, University of Nantes, Nantes, France. ‡Adjunct Assistant Professor, Department of Periodontology and Implant Dentistry, College of Dentistry, New York University, New York, NY, and Institut Straumann, Basel, Switzerland. §Professor and Head, Department of Periodontology, Faculty of Dental surgery, (Inserm U791/UIC 11) CHU de Nantes, Nantes, France. ¶Associate Professor and Head, Department of Oral Implantology, Faculty of Dental Surgery, University of Nantes, Nantes, France
| | | | | | | | | | | | | |
Collapse
|
15
|
de Souza AB, Sukekava F, Tolentino L, César-Neto JB, Garcez-Filho J, Araújo MG. Narrow- and regular-diameter implants in the posterior region of the jaws to support single crowns: A 3-year split-mouth randomized clinical trial. Clin Oral Implants Res 2017; 29:100-107. [DOI: 10.1111/clr.13076] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2017] [Indexed: 12/20/2022]
Affiliation(s)
| | - Flávia Sukekava
- Division of Periodontics; School of Dentistry; University of São Paulo; São Paulo Brazil
| | | | | | | | | |
Collapse
|
16
|
Iegami CM, Uehara PN, Sesma N, Pannuti CM, Tortamano Neto P, Mukai MK. Survival rate of titanium-zirconium narrow diameter dental implants versus commercially pure titanium narrow diameter dental implants: A systematic review. Clin Implant Dent Relat Res 2017; 19:1015-1022. [DOI: 10.1111/cid.12527] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/26/2017] [Accepted: 07/31/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Carolina Mayumi Iegami
- Department of Prosthodontics; University of Sao Paulo, School of Dentistry, Sao Paulo; Brazil
| | | | - Newton Sesma
- Department of Prosthodontics; University of Sao Paulo, School of Dentistry, Sao Paulo; Brazil
| | | | - Pedro Tortamano Neto
- Department of Prosthodontics; University of Sao Paulo, School of Dentistry, Sao Paulo; Brazil
| | - Márcio Katsuyoshi Mukai
- Department of Prosthodontics; University of Sao Paulo, School of Dentistry, Sao Paulo; Brazil
| |
Collapse
|
17
|
Chang YY, Kim SH, Park KO, Yun JH. Effect of microthreads on coronal bone healing of narrow-diameter implants with reverse-tapered design in beagle dogs. Clin Oral Implants Res 2017; 28:1532-1542. [PMID: 28543806 DOI: 10.1111/clr.13022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/07/2017] [Indexed: 12/01/2022]
Abstract
OBJECTIVES The objective of this study was to investigate the effect of microthreads on the coronal bone healing of narrow-diameter implants with reverse-tapered design. MATERIAL AND METHODS A total of 52 implants were classified into two groups according to presence or absence of coronal microthreads, the reverse-tapered narrow-diameter implant (RTN) group, and the reverse-tapered narrow-diameter implant with microthreads (RTNM) group. The implants were installed in split-mouth design in the edentulous mandible of six dogs. Three animals were sacrificed at 4 weeks and three at 8 weeks. Resonance frequency analysis, bone measurement using microcomputed tomography (micro-CT), removal torque test, and histometric analysis were performed. RESULTS No significant differences in implant stability quotient value were observed between the groups at baseline, 4 weeks, or 8 weeks. Bone measurement using micro-CT showed that bone-implant contact volume (BICV) and bone-implant contact volume ratio (BICVR) in the coronal part of RTNM were statistically higher than those in RTN at 4 and 8 weeks. Histometric analysis showed statistically higher bone-implant contact length (BICL) in the coronal part of RTNM than in RTN at 4 weeks; however, bone-implant contact ratio (BICR) was not significantly different between the groups. At 8 weeks, the BICL and BICR did not differ significantly between the groups. Removal torque test showed no significant differences between the groups at 4 and 8 weeks. CONCLUSIONS The microthreads might facilitate more coronal bone-implant contact due to increased surface areas at an early healing phase; however, they did not significantly affect coronal bone healing at 8 weeks.
Collapse
Affiliation(s)
- Yun-Young Chang
- Division of Periodontology, Department of Dentistry, Inha International Medical Center, Incheon, Korea
| | - Su-Hwan Kim
- Department of Periodontics, Asan Medical Center & Department of Dentistry, University of Ulsan College of Medicine, Seoul, Korea
| | - Keun-Oh Park
- Department of Bio-fibers and Materials Science, Kyungpook National University, Daegu, Korea
| | - Jeong-Ho Yun
- Department of Periodontology, School of Dentistry and Institute of Oral Bioscience, Chonbuk National University, Jeonju, Korea.,Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| |
Collapse
|
18
|
Is there scientific evidence favoring the substitution of commercially pure titanium with titanium alloys for the manufacture of dental implants? MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:1201-1215. [DOI: 10.1016/j.msec.2016.10.025] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Revised: 10/07/2016] [Accepted: 10/16/2016] [Indexed: 11/22/2022]
|
19
|
Abstract
STATEMENT OF PROBLEM Evidence is limited on the efficacy of narrow-diameter implants (NDIs) in the posterior jaw. PURPOSE The purpose of this systematic review was to assess the survival of NDIs and provide guidelines for their safe use. MATERIALS AND METHODS Electronic search of the English-language literature enriched by hand search to identify suitable publications was made. Only peer-reviewed clinical studies published from January 1990 through March 2014 were included. RESULTS Seventeen studies with a total of 1644 implants met the inclusion criteria, with an observation period from 1 up to 12 years. The mean survival rate of 98.6% was reported. Technical and other complications were observed. CONCLUSION Short-term clinical data suggest that NDIs may serve in the posterior jaw as an alternative to standard-diameter implants. However, certain clinical conditions must be observed to assure long-term success.
Collapse
|
20
|
Marković A, Đinić A, Calvo Guirado JL, Tahmaseb A, Šćepanović M, Janjić B. Randomized clinical study of the peri-implant healing to hydrophilic and hydrophobic implant surfaces in patients receiving anticoagulants. Clin Oral Implants Res 2016; 28:1241-1247. [DOI: 10.1111/clr.12948] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Aleksa Marković
- Department of Oral Surgery; School of Dental Medicine; University of Belgrade; Belgrade Serbia
| | - Ana Đinić
- Department of Oral Surgery; School of Dental Medicine; University of Belgrade; Belgrade Serbia
| | - José Luis Calvo Guirado
- Department of Research; International Dentistry Research Cathedra; UCAM Universidad Catolica San Antonio de Murcia; Murcia Spain
| | - Ali Tahmaseb
- Department of Oral Implantology and Prosthetic Dentistry; Academic Center for Dentistry Amsterdam (ACTA); Move Research Institute; Amsterdam The Netherlands
| | - Miodrag Šćepanović
- Department of Prosthodontics; School of Dental Medicine; University of Belgrade; Belgrade Serbia
| | - Bojan Janjić
- Department of Oral Surgery; School of Dental Medicine; University of Belgrade; Belgrade Serbia
| |
Collapse
|
21
|
Altuna P, Lucas-Taulé E, Gargallo-Albiol J, Figueras-Álvarez O, Hernández-Alfaro F, Nart J. Clinical evidence on titanium–zirconium dental implants: a systematic review and meta-analysis. Int J Oral Maxillofac Surg 2016; 45:842-50. [DOI: 10.1016/j.ijom.2016.01.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 10/21/2015] [Accepted: 01/11/2016] [Indexed: 11/15/2022]
|
22
|
Altinci P, Can G, Gunes O, Ozturk C, Eren H. Stability and Marginal Bone Level Changes of SLActive Titanium-Zirconium Implants Placed with Flapless Surgery: A Prospective Pilot Study. Clin Implant Dent Relat Res 2016; 18:1193-1199. [DOI: 10.1111/cid.12392] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 01/05/2016] [Accepted: 01/09/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Pinar Altinci
- Research Assistant, Department of Prosthodontics, Faculty of Dentistry, Ankara University; Ankara Turkey
| | - Gulsen Can
- Professor, Department of Prosthodontics, Faculty of Dentistry, Ankara University; Ankara Turkey
| | - Onur Gunes
- Research Assistant, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ankara University; Ankara Turkey
| | - Caner Ozturk
- Research Assistant, Department of Prosthodontics, Faculty of Dentistry, Ankara University; Ankara Turkey
| | - Hakan Eren
- Research Assistant, Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University; Ankara Turkey
| |
Collapse
|
23
|
Ioannidis A, Gallucci GO, Jung RE, Borzangy S, Hämmerle CHF, Benic GI. Titanium-zirconium narrow-diameter versus
titanium regular-diameter implants for anterior and premolar single crowns: 3-year results of a randomized controlled clinical study. J Clin Periodontol 2015; 42:1060-70. [DOI: 10.1111/jcpe.12468] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/26/2015] [Indexed: 10/23/2022]
Affiliation(s)
- Alexis Ioannidis
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; Center of Dental Medicine; University of Zurich; Zurich Switzerland
| | - German O. Gallucci
- Department of Restorative Dentistry and Biomaterials Sciences; Harvard School of Dental Medicine; Boston MA USA
| | - Ronald E. Jung
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; Center of Dental Medicine; University of Zurich; Zurich Switzerland
| | - Sary Borzangy
- Department of Restorative Dentistry and Biomaterials Sciences; Harvard School of Dental Medicine; Boston MA USA
- Department of Substitutive Dental Sciences; College of Dentistry; Taibah University; Al Madinah Al Munawwarah Kingdom of Saudi Arabia
| | - Christoph H. F. Hämmerle
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; Center of Dental Medicine; University of Zurich; Zurich Switzerland
| | - Goran I. Benic
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; Center of Dental Medicine; University of Zurich; Zurich Switzerland
| |
Collapse
|
24
|
Tolentino L, Sukekava F, Garcez-Filho J, Tormena M, Lima LA, Araújo MG. One-year follow-up of titanium/zirconium alloy X commercially pure titanium narrow-diameter implants placed in the molar region of the mandible: a randomized controlled trial. Clin Oral Implants Res 2015; 27:393-8. [PMID: 25692479 DOI: 10.1111/clr.12561] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/15/2015] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To analyze marginal bone loss (MBL) and clinical parameters around narrow-diameter implants (NDIs - 3.3 mm) made of titanium/zirconium alloy (TiZr) in comparison with commercially pure titanium (cpTi) installed in the molar region of the mandible after 1 year in function. MATERIALS AND METHODS Ten patients participated in the study. A TiZr and a cpTi NDI were randomly installed in contralateral molar sites of the mandible of each patient in a split-mouth design. Eight weeks after healing, all metal-ceramic single crowns were adapted to the implants and patients were enrolled in a plaque control program. MBL at the mesial and distal aspects of the implants were evaluated by comparing periapical radiographs taken immediately after prosthesis installation (T1) and 1 year after loading (T2). Clinical probing depth, bleeding on probing, suppuration, visible plaque and implant mobility were evaluated to determine implant success and survival rates. RESULTS Mean MBL at the interproximal aspects of TiZr implant sites was 0.32 ± 0.27 mm, while at cpTi implant sites mean MBL was 0.35 ± 0.24 mm (P = 0.60). Both TiZr and cpTi NDIs presented 100% implant survival and success rates, with no significant differences in the clinical parameters studied (P > 0.05). CONCLUSION TiZr and cpTi NDIs presented similar outcomes after 1 year in function in the molar region of the mandible. The results suggest that TiZr and cpTi NDIs may be equally used to support single crowns in the posterior area of the mouth. However, further studies with longer follow-up periods are necessary to confirm these findings.
Collapse
Affiliation(s)
- L Tolentino
- Division of Periodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - F Sukekava
- Division of Periodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | | | - M Tormena
- Department of Dentistry, State University of Maringá, Maringá, Brazil
| | - L A Lima
- Division of Periodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - M G Araújo
- Department of Dentistry, State University of Maringá, Maringá, Brazil
| |
Collapse
|