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Bregagnol RB, Coltro MPDL, Villarinho EA, Triches DF, Alonso FR, Mezzomo LAM, de Macedo BB, Teixeira ER, Vigo A, Shinkai RSA. Long-term clinical performance of short 6-mm implants supporting single crowns in the posterior region: A 10-year cohort study. Clin Implant Dent Relat Res 2024; 26:158-169. [PMID: 37882144 DOI: 10.1111/cid.13287] [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: 06/20/2023] [Revised: 09/10/2023] [Accepted: 10/02/2023] [Indexed: 10/27/2023]
Abstract
INTRODUCTION Long-term clinical success of non-splinted, posterior, and short implants still is unclear. This prospective cohort study reports the 10-year follow-up of 6-mm implants supporting single crowns in the posterior region, and patient-reported outcomes. METHODS Baseline sample comprised 20 patients treated with 46 screw-retained crowns supported by 6-mm implants with moderately rough implant surface. Participants were recalled for a 10-year clinical follow-up to assess survival rates, biologic and mechanic conditions, quality of life (OHIP-14), and treatment satisfaction. Data were collected with clinical-radiographic exams and analyzed using descriptive and inferential statistics. RESULTS Fourteen patients with 35 implant-crown units were examined after 127.6 ± 11.8 months. For the entire cohort period, 7/46 implants were lost (survival estimate: 77.7% at 133 months), and mechanic complications occurred in 14/46 units (survival estimate: 66.4% at 116 months). In the Cox models, "maximum occlusal force" had a significant effect for implant loss (p = 0.038) and for prosthetic screw loosening (p = 0.038); "arch" and "bruxism" were not significant. Peri-implant bone loss was 0.4 ± 0.6 mm at 10 years. For peri-implant bone level, "crown-to-implant ratio" (p < 0.001) and "time" (p = 0.001) were significant. Bone levels differed from baseline to 12, 48, and 120 months. Satisfaction VAS was 94.0 ± 7.9 mm and OHIP-14 was 2.3 ± 2.2. CONCLUSION Single screw-retained crowns supported by 6-mm implants have an acceptable long-term clinical performance, with stable peri-implant bone levels after 10 years of function.
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Affiliation(s)
- Raphaela Brambilla Bregagnol
- School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
- Private Practice, Porto Alegre, Brazil
| | | | | | - Diego Fernandes Triches
- School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
- Private Practice, Porto Alegre, Brazil
| | - Fernando Rizzo Alonso
- School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
- Private Practice, Jaú, Brazil
| | - Luís André Mendonça Mezzomo
- School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
- School of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | | | - Eduardo Rolim Teixeira
- School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Alvaro Vigo
- Postgraduate Program in Epidemiology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Rosemary Sadami Arai Shinkai
- School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
- School of Dentistry, University of São Paulo, São Paulo, Brazil
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Wu HC, Huang HL, Fuh LJ, Tsai MT, Hsu JT. Influence of implant length and insertion depth on primary stability of short dental implants: An in vitro study of a novel mandibular artificial bone model. J Dent Sci 2024; 19:139-147. [PMID: 38303865 PMCID: PMC10829676 DOI: 10.1016/j.jds.2023.05.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/16/2023] [Indexed: 02/03/2024] Open
Abstract
Background/purpose Dental implants are a mainstream solution for missing teeth. For the improvement of dental implant surface treatment and design, short dental implants have become an alternative to various complex bone augmentation procedures, especially those performed at the posterior region of both the maxilla and mandible. The objective of this study was to evaluate the effect of various insertion methods on the primary stability of short dental implants. Materials and methods Commercial dental implants were inserted into artificial mandibular bone specimens using various insertion methods (equicrestal position, subcrestal position 1.5 mm, and lateral cortical anchorage) in accordance with an implant surgical guide. Insertion torque value (ITV) curves were recorded while implant procedures were performed. Both maximum ITVs (MITVs) and final ITVs (FITVs) were evaluated. Subsequently, Periotest values (PTVs) and implant stability quotients (ISQs) were measured for all specimens. A Kruskal-Wallis test was conducted to analyze the results for four primary stability parameters, and the Dunn test was used for a post hoc pairwise comparison when a difference was identified. Results For all groups, their mean MITVs ranged from 33.6 to 59.4 N cm, whereas their mean FITVs ranged from 17.5 to 43.5 N cm. Insertion torque value, ISQ, and PTV decreased significantly when implants were inserted into subcrestal positions. When implants were inserted in the lateral bicortical position, the four aforementioned parameters yielded greater values. Conclusion When 6-mm short implants were inserted in a lateral cortical anchorage position, high primary stability was yielded.
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Affiliation(s)
- Hsiang-Chun Wu
- School of Dentistry, China Medical University, Taichung, Taiwan
| | - Heng-Li Huang
- School of Dentistry, China Medical University, Taichung, Taiwan
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan
- Department of Biomedical Engineering, China Medical University, Taichung, Taiwan
| | - Lih-Jyh Fuh
- School of Dentistry, China Medical University, Taichung, Taiwan
- Department of Dentistry, China Medical University and Hospital, Taichung, Taiwan
| | - Ming-Tzu Tsai
- Department of Biomedical Engineering, Hungkuang University, Taichung, Taiwan
| | - Jui-Ting Hsu
- School of Dentistry, China Medical University, Taichung, Taiwan
- Department of Biomedical Engineering, China Medical University, Taichung, Taiwan
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Alla I, Lorusso F, Gehrke SA, Inchingolo F, Di Carmine M, Scarano A. Implant Survival in Patients with Chronic Kidney Disease: A Case Report and Systematic Review of the Literature. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20032401. [PMID: 36767768 PMCID: PMC9916383 DOI: 10.3390/ijerph20032401] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/26/2023] [Accepted: 01/27/2023] [Indexed: 05/31/2023]
Abstract
BACKGROUND The aim of this systematic review and case reports was to evaluate osseointegration and implant survival rate in patients with chronic kidney disease. METHODS The paper screening process was conducted on electronic databases in order to identify clinical studies concerning the study topic. The literature data were evaluated for eligibility and studies were included for the qualitative synthesis. The case report concerned a male subject affected by renal disorders, a candidate for full arch immediate loading procedure. RESULTS The article screening process reported a total of 54 manuscripts and one paper identified through the manual search. At the end of the review process, a total of 45 articles were excluded while nine manuscripts were included for the descriptive synthesis. No significant complications or events were present during the intraoperative/post-operative phases. The clinical course reported no significant inflammation or symptoms. At follow-up, the rehabilitation was found to be functionally and aesthetically integrated with no complications, probing, or bone resorption. CONCLUSIONS The available evidence supports the clinical efficacy of the early implant placement protocol. Present findings indicate that the early implant placement protocol results in implant outcomes similar to immediate and delayed placement protocols and a superior stability of peri-implant hard tissue compared with immediate implant placement.
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Affiliation(s)
- Iris Alla
- Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy
| | - Felice Lorusso
- Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy
| | - Sergio Alexandre Gehrke
- Department of Research, Bioface/PgO/UCAM, Montevideo 11100, Uruguay
- Department of Biotechnology, Universidad Católica de Murcia (UCAM), 30107 Murcia, Spain
| | - Francesco Inchingolo
- Department of Interdisciplinary Medicine, Section of Dentistry, University of Bari School of Medicine, Piazza G. Cesare, 11, 70124 Bari, Italy
| | - Maristella Di Carmine
- Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy
| | - Antonio Scarano
- Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy
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Liu F, Mao ZH, Peng W, Wen S. Biomechanical influence of thread form on stress distribution over short implants (≤6 mm) using finite element analysis. BIOMED ENG-BIOMED TE 2022; 67:53-60. [DOI: 10.1515/bmt-2020-0215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 12/17/2021] [Indexed: 11/15/2022]
Abstract
Abstract
The macro and micro design is essential to the biomechanical performance of a short implant. In this study, the implant thread parameters of short implants used in edentulous maxillae will be discussed. The aim of the study is to analyse biomechanical distinctions in different thread parameters over short implants by applying the vertical or oblique load of 130 N on dental prosthesis. A 6*5 mm implant will be used in posterior maxillae arch, where the molar region locates. The CAD model has been assembled by three parts, a crown, an implant system and a jaw. By applying the vertical or oblique load to the crown, the Von-Mises stresses of cortical bone and trabecular bone will be evaluated in pairs along the lines v1–v2 & a1–a2. The results showed that the reverse buttress thread would induce more stresses in cancellous bone whereas the buttress did the opposite. The trapezoidal thread (V-thread) is more favourable than the reverse buttress thread in accordance to the FEA result. The rectangle threads will induce more uneven stresses in cancellous bones.
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Affiliation(s)
- Fan Liu
- Division of Intelligent Manufacturing , Wuyi University , Jiangmen , Guangdong Province , China
| | - Zhi-Hong Mao
- Division of Intelligent Manufacturing , Wuyi University , Jiangmen , Guangdong Province , China
| | - Wujie Peng
- Division of Intelligent Manufacturing , Wuyi University , Jiangmen , Guangdong Province , China
| | - Sheng Wen
- Engineering Fundamental Teaching and Training Centre , South China Agricultural University , Guangzhou , Guangdong Province , China
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Ercal P, Taysi AE, Ayvalioglu DC, Eren MM, Sismanoglu S. Impact of peri-implant bone resorption, prosthetic materials, and crown to implant ratio on the stress distribution of short implants: a finite element analysis. Med Biol Eng Comput 2021; 59:813-824. [PMID: 33728596 DOI: 10.1007/s11517-021-02342-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 03/04/2021] [Indexed: 11/27/2022]
Abstract
The purpose of this study was to determine the effects of prosthetic materials and crown/implant (C/I) ratio on short implants with a marginal bone resorption. Three-dimensional finite element analysis was used to simulate stress distribution under static loading in non-resorption and resorption scenarios (3-mm vertical bone loss) in implants restored with single crowns and C/I ratios of 1:1, 1.5:1, and 2:1 were evaluated. Different crown materials were used: porcelain-fused to metal, porcelain-fused to zirconia, monolithic zirconia, and zirconia-based crown veneered with indirect composite resin. The C/I ratio, the peri-implant bone resorption, and the loading conditions were the key factors affecting the generated stress in short implants. In non-resorption models, von Mises stress ranged between 50 and 105 MPa whereas in resorption models, the values ranged from 168 to 322 MPa, both increasing with the higher C/I ratio under oblique forces. Under axial loading, the C/I ratio did not influence the stress values as the presence of resorption was the only parameter increasing, 57 MPa for the non-resorption models and 101 MPa for the resorption models, respectively. Preference of a prosthetic material was ineffective on the distribution of stress in the bone and implant structure under static loading in any models. The peri-implant bone resorption and a higher C/I ratio in short implants increase the stress values under both axial and oblique forces, whereas the crown material does not influence stress distribution in the surrounding bone and implant structure.
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Affiliation(s)
- Pinar Ercal
- Department of Oral Surgery, Faculty of Dentistry, Altinbas University, Incirli cd. No:11, 34147, Bakirkoy, Istanbul, Turkey.
| | - Aysegul Erten Taysi
- Department of Oral Surgery, Faculty of Dentistry, Altinbas University, Incirli cd. No:11, 34147, Bakirkoy, Istanbul, Turkey
| | - Demet Cagil Ayvalioglu
- Department of Prosthetic Dentistry, Faculty of Dentistry, Altinbas University, Incirli cd. No:11, 34147, Bakirkoy, Istanbul, Turkey
| | - Meltem Mert Eren
- Department of Restorative Dentistry, Faculty of Dentistry, Altinbas University, Incirli cd. No:11, 34147, Bakirkoy, Istanbul, Turkey
| | - Soner Sismanoglu
- Department of Restorative Dentistry, Faculty of Dentistry, Altinbas University, Incirli cd. No:11, 34147, Bakirkoy, Istanbul, Turkey
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Leighton Y, Carpio L, Weber B, Dias FJ, Borie E. Clinical evaluation of single 4-mm implants in the posterior mandible: A 3-year follow-up pilot study. J Prosthet Dent 2020; 127:80-85. [PMID: 33234301 DOI: 10.1016/j.prosdent.2020.06.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 11/27/2022]
Abstract
STATEMENT OF PROBLEM Extra-short implants in the posterior mandible can increase the functional surface area and reduce the risk of implant overload. However, reports of treatment using single extra-short implants in the posterior mandible with a midterm follow-up are lacking. PURPOSE The purpose of this prospective pilot study was to evaluate the clinical behavior of single extra-short 4-mm implants placed in the posterior mandible during a follow-up of 3 years from implant restoration. MATERIAL AND METHODS A total of 18 participants with a single extra-short 4-mm-long implant placed in the area of the mandibular first molars participated in this pilot study. The survival and success rates of implants, as well as biologic and prosthetic variables, were evaluated during a follow-up of 3 years from implant restoration. RESULTS The survival rate of the implants was 100%, with no implant or biologic complications recorded. One prosthetic complication (loosening of 1 screw) was observed. CONCLUSIONS Single extra-short (4 mm) implants in the posterior mandible showed favorable clinical behavior during the first 3-years of follow-up.
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Affiliation(s)
- Yerko Leighton
- Professor, Department of Oral Implantology, Universidad de Los Andes, Santiago, Chile
| | - Luis Carpio
- Professor, Department of Prosthodontics, Universidad de Cuenca, Cuenca, Ecuador
| | - Benjamin Weber
- Assistant Professor, Department of Integral Dentistry of Adults, Universidad de La Frontera, Temuco, Chile
| | - Fernando Jose Dias
- Associate Professor, Department of Integral Dentistry of Adults, Universidad de La Frontera, Temuco, Chile
| | - Eduardo Borie
- Associate Professor, Department of Integral Dentistry of Adults, Universidad de La Frontera, Temuco, Chile.
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Iezzi G, Perrotti V, Felice P, Barausse C, Piattelli A, Del Fabbro M. Are <7‐mm long implants in native bone as effective as longer implants in augmented bone for the rehabilitation of posterior atrophic jaws? A systematic review and meta‐analysis. Clin Implant Dent Relat Res 2020; 22:552-566. [DOI: 10.1111/cid.12946] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/12/2020] [Indexed: 08/30/2023]
Affiliation(s)
- Giovanna Iezzi
- Department of Medical, Oral and Biotechnological Sciences University of Chieti‐Pescara “Gabriele D'Annunzio” Chieti Italy
| | - Vittoria Perrotti
- Department of Medical, Oral and Biotechnological Sciences University of Chieti‐Pescara “Gabriele D'Annunzio” Chieti Italy
| | - Pietro Felice
- Oral Surgery, Department of Biomedical and Neuromotor Sciences University of Bologna Bologna Italy
| | - Carlo Barausse
- Oral Surgery, Department of Biomedical and Neuromotor Sciences University of Bologna Bologna Italy
| | - Adriano Piattelli
- Department of Medical, Oral and Biotechnological Sciences University of Chieti‐Pescara “Gabriele D'Annunzio” Chieti Italy
- Biomaterials Engineering Catholic University of San Antonio de Murcia (UCAM) Murcia Spain
- Fondazione Villaserena per la Ricerca Città Sant'Angelo Pescara Italy
| | - Massimo Del Fabbro
- Department of Biomedical, Surgical and Dental Sciences University of Milan Milan Italy
- Dental Clinic IRCCS Orthopedic Institute Galeazzi Milan Italy
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Silva R, Villalón P, Cáceres F. Effect of macro-design in the primary stability of short and extra-short implants using resonance frequency analysis. An ex vivo study. J Oral Biol Craniofac Res 2020; 10:603-607. [PMID: 32953443 DOI: 10.1016/j.jobcr.2020.08.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/22/2020] [Accepted: 08/28/2020] [Indexed: 12/30/2022] Open
Abstract
Objective This study aimed to determine the effect of macro design in the primary stability of short and extra-short implants using resonance frequency analysis (RFA). Material and methods On an ex-vivo model using pig's ribs, we inserted 80 short and extra-short dental implants (20 implants per brand): Biohorizons®(B) 4.6 × 6mm; Intralock®(I) 4.75 × 6.5 mm; Straumann®(S) 4.1 × 4mm; and Tixos®(T) 5 × 5mm. Primary implant stability was measured using an RFA device. We compared mean ISQ values through ANOVA test. Results Mean ISQ values: B = 73.36 (±3.39); I = 75.13 (±3.88); S = 65.38 (±8.38); T = 72.13 (±11). B and I showed higher ISQ than S (p-value < 0.001). Short (I) showed higher ISQ than extra-short (B,S,T) implants (p-value = 0.001). Tapered (B,I) had higher ISQ than parallel (S,T) implants (p-value < 0.001). There was a moderate positive correlation between ISQ and length (r = 0.52), and a weak correlation with diameter (r = 0.33). Discussion The final result is a combination of implant design, length, and diameter. Tapered design (B and I) and larger implants (I) showed better primary stability in terms of ISQ values. This information could be beneficial at implant selection in a severely reabsorbed low-quality bone, privileging length (as long as it is safe), and conical walls design.
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Affiliation(s)
- Ramón Silva
- Department of Implant Dentistry, Facultad de Odontología, Universidad de los Andes, Monseñor Álvaro del Portillo 12455, 7620001, Las Condes, Santiago, Chile
| | - Pablo Villalón
- Department of Implant Dentistry, Facultad de Odontología, Universidad de los Andes, Monseñor Álvaro del Portillo 12455, 7620001, Las Condes, Santiago, Chile
| | - Felipe Cáceres
- Department of Implant Dentistry, Facultad de Odontología, Universidad de los Andes, Monseñor Álvaro del Portillo 12455, 7620001, Las Condes, Santiago, Chile
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Rizzo P. A review on the latest advancements in the non-invasive evaluation/monitoring of dental and trans-femoral implants. Biomed Eng Lett 2019; 10:83-102. [PMID: 32175131 DOI: 10.1007/s13534-019-00126-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 06/05/2019] [Accepted: 07/29/2019] [Indexed: 12/11/2022] Open
Abstract
Dental implants and transcutaneous prostheses (trans-femoral implants) improve the quality of life of millions of people because they represent the optimal treatments to edentulism and amputation, respectively. The clinical procedures adopted by surgeons to insert these implants are well established. However, there is uncertainty on the outcomes of the post-operation recovery because of the uncertainty associated with the osseointegration process, which is defined as the direct, structural and functional contact between the living bone and the fixture. To guarantee the long-term survivability of dental or trans-femoral implants doctors sometimes implement non-invasive techniques to monitor and evaluate the progress of osseointegration. This may be done by measuring the stability of the fixture or by assessing the quality of the bone-fixture interface. In addition, care providers may need to quantify the structural integrity of the bone-implant system at various moments during the patients recovery. The accuracy of such non-invasive methods reduce recovery and rehabilitation time, and may increase the survival rate of the therapies with undisputable benefits for the patients. This paper provides a comprehensive review of clinically-approved and emerging non-invasive methods to evaluate/monitor the osseointegration of dental and orthopedic implants. A discussion about advantages and limitations of each method is provided based on the outcomes of the cases presented. The review on the emerging technologies covers the developments of the last decade, while the discussion about the clinically approved systems focuses mostly on the latest (2017-2018) findings. At last, the review also provides some suggestions for future researches and developments in the area of implant monitoring.
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Affiliation(s)
- Piervincenzo Rizzo
- Department of Civil and Environmental Engineering, University of Pittsburgh, 729 Benedum Hall, 3700 O'Hara Street, Pittsburgh, PA 15261 USA
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Triches DF, Alonso FR, Mezzomo LA, Schneider DR, Villarinho EA, Rockenbach MI, Teixeira ER, Shinkai RS. Relation between insertion torque and tactile, visual, and rescaled gray value measures of bone quality: a cross-sectional clinical study with short implants. Int J Implant Dent 2019; 5:9. [PMID: 30740630 PMCID: PMC6369231 DOI: 10.1186/s40729-019-0158-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 01/06/2019] [Indexed: 11/25/2022] Open
Abstract
Background This study assessed the relationship between insertion torque and bone quality evaluated during surgery and in preoperative computed tomographic (CT) images analyzed either visually or by rescaled mean gray values (MGVs). The study also tested the correlation between the clinical and radiographic measures of bone quality. Methods The consecutive sample was composed of 45 short implants (4.1 × 6 mm) placed in the posterior region of 20 patients. Intra-surgical tactile bone quality, based on the classification of bone types by Lekholm and Zarb, and insertion torque were recorded during the implant placement. Visual bone quality and normalized MGV were assessed in standardized axial, coronal, and sagittal sections of preoperative CT images. Data were analyzed by ANOVA and Spearman correlation (alpha = 0.05). Results Insertion torque was associated with all assessment methods of bone quality (tactile, CT visual, MGV). A moderate correlation was found among all methods of bone quality, except for CT visual assessment and tactile evaluation. MGVs varied as a function of arch, dental region, insertion torque, and bone types. Conclusions The results suggest that bone quality measures affect primary stability as recorded by insertion torque, and the assessment methods are consistently related.
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Affiliation(s)
- Diego Fernandes Triches
- Postgraduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Dental School, Avenida Ipiranga, 6681 - Prédio 6, Porto Alegre, RS, 90619-900, Brazil.
| | - Fernando Rizzo Alonso
- Postgraduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Dental School, Avenida Ipiranga, 6681 - Prédio 6, Porto Alegre, RS, 90619-900, Brazil
| | - Luis André Mezzomo
- Postgraduate Program in Dentistry, Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
| | - Danilo Renato Schneider
- Postgraduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Dental School, Avenida Ipiranga, 6681 - Prédio 6, Porto Alegre, RS, 90619-900, Brazil
| | - Eduardo Aydos Villarinho
- Postgraduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Dental School, Avenida Ipiranga, 6681 - Prédio 6, Porto Alegre, RS, 90619-900, Brazil
| | - Maria Ivete Rockenbach
- Postgraduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Dental School, Avenida Ipiranga, 6681 - Prédio 6, Porto Alegre, RS, 90619-900, Brazil
| | - Eduardo Rolim Teixeira
- Postgraduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Dental School, Avenida Ipiranga, 6681 - Prédio 6, Porto Alegre, RS, 90619-900, Brazil
| | - Rosemary Sadami Shinkai
- Postgraduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Dental School, Avenida Ipiranga, 6681 - Prédio 6, Porto Alegre, RS, 90619-900, Brazil
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González-Serrano J, Molinero-Mourelle P, Pardal-Peláez B, Sáez-Alcaide LM, Ortega R, López-Quiles J. Influence of short implants geometry on primary stability. Med Oral Patol Oral Cir Bucal 2018; 23:e602-e607. [PMID: 30148474 PMCID: PMC6167106 DOI: 10.4317/medoral.22378] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 07/25/2018] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND A correct design is needed in short implants to improve primary stability (PS) in low quality bone. This study aimed to compare PS of double thread and single thread short implants. MATERIAL AND METHODS Thirty implants with single thread design (PHI/SHORT-I) and 30 implants with double thread design (PHIA/SHORT-I) (Radhex®, Inmet-Garnick S.A., Guadalajara, Spain) were placed in 30 randomly selected bovine ribs. PS was assessed in implant stability quotients (ISQ) and periotest values (PV) with Osstell™ and Periotest® devices, respectively. Computed tomographies of the ribs were taken and bone quality was evaluated in Hounsfield Units (HU) using Ez3D Plus software (Vatech Co., Korea). Only implants placed in low quality bone according to Misch and Kircos classification were selected (D3 bone: 350-850 HU; and D4 bone: 150-350 HU). Ten implants were not included in the study for being placed in D1 and D2 bone. Finally, 50 implants were selected: 17 and 9 PHI/SHORT-I in D3 and D4 bone respectively, and 15 and 9 PHIA/SHORT-I in D3 and D4 bone respectively. RESULTS The one-way ANOVA showed statistically significant differences in ISQ (61.35 ± 4.77 in PHI/SHORT-I and 66.43 ± 4.49 in PHIA/SHORT-I, P<0.005) and PV (-2.76 ± 0.8 and -4.11 ± 1.24 respectively, P<0.005) between two implant designs in D3 bone, and statistically significant differences in ISQ (53.44 ± 3.34 in PHI/SHORT-I and 60.56 ± 1.53 in PHIA/SHORT-I, P<0.0001) and PV (1.13 ± 0.95 and -2.5 ± 0.61 respectively, P<0.0001) between two groups in D4 bone. CONCLUSIONS Double thread design short implants resulted to have higher PS in comparison with single thread design short implants in D3 and D4 bone.
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Affiliation(s)
- J González-Serrano
- Departamento de Especialidades Clínicas Odontológicas, Facultad de Odontología, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040, Madrid,
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Zanetti EM, Pascoletti G, Calì M, Bignardi C, Franceschini G. Clinical Assessment of Dental Implant Stability During Follow-Up: What Is Actually Measured, and Perspectives. BIOSENSORS 2018; 8:E68. [PMID: 30011870 PMCID: PMC6165397 DOI: 10.3390/bios8030068] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/09/2018] [Accepted: 07/11/2018] [Indexed: 01/02/2023]
Abstract
The optimization of loading protocols following dental implant insertion requires setting up patient-specific protocols, customized according to the actual implant osseointegration, measured through quantitative, objective methods. Various devices for the assessment of implant stability as an indirect measure of implant osseointegration have been developed. They are analyzed here, introducing the respective physical models, outlining major advantages and critical aspects, and reporting their clinical performance. A careful discussion of underlying hypotheses is finally reported, as is a suggestion for further development of instrumentation and signal analysis.
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