M Fernanda Solá-Ruíz1, Begoña Martí-Martí2, Cristina Rech-Ortega3, Lucía Fernández-Estevan3, Rubén Agustín-Panadero4. 1. Adjunct Professor, Department of Oral Medicine, Faculty of Medicine and Dentistry, Valencia University, Valencia, Spain. 2. Postgraduate student, Department of Oral Medicine, Faculty of Medicine and Dentistry, Valencia University, Valencia, Spain. 3. Associate Professor, Department of Oral Medicine, Faculty of Medicine and Dentistry, Valencia University, Valencia, Spain. 4. Adjunct Professor, Department of Oral Medicine, Faculty of Medicine and Dentistry, Valencia University, Valencia, Spain. Electronic address: rubenagustinpanadero@gmail.com.
Abstract
STATEMENT OF PROBLEM: Marginal bone loss is key to determining the success of dental implants. However, how different factors, including the extension or span of implant-supported restorations and implant position, affect bone loss is unclear. PURPOSE: The purpose of this prospective clinical study was to analyze peri-implant bone loss 3 years after loading by evaluating the influence of implant position and prosthetic type and comparing splinted crowns and 3- or 4-unit fixed partial dentures (FPDs) to determine whether 2 dental implants can achieve comparable success when replacing 2, 3, or 4 missing teeth. MATERIAL AND METHODS: Sixty-two adjacent dental implants in 23 participants were investigated. The implants supported noncantilevered restorations: 2 splinted crowns or 3- or 4-unit FPDs. Bone loss was evaluated 3 years after loading from periapical radiographs using AutoCAD software. Nonparametric comparisons were made. The Wilcoxon test was applied to determine homogeneity of related samples. The Mann-Whitney test was applied to measure homogeneity of bone loss in 2 independent samples and the presence/absence of a pontic in the restoration (α=.05). RESULTS: Mean ±standard deviation peri-implant bone loss was 0.9 ±0.7 mm. The peri-implant bone loss of the restorations analyzed was similar to the average values of 1.1 ±0.8 mm for 3- and 4-unit FPDs and 0.8 ±0.6 mm for splinted crowns. The type of prosthodontic restoration and implant position did not show significant influences on bone loss (P>.05). CONCLUSIONS: Mean bone loss values were within an acceptable range. Statistically significant relationships were not found between the restoration types, suggesting that 3 or 4 missing teeth can be replaced by 2 implants. Further studies with longer follow-ups are needed to obtain clinically applicable conclusions.
STATEMENT OF PROBLEM: Marginal bone loss is key to determining the success of dental implants. However, how different factors, including the extension or span of implant-supported restorations and implant position, affect bone loss is unclear. PURPOSE: The purpose of this prospective clinical study was to analyze peri-implant bone loss 3 years after loading by evaluating the influence of implant position and prosthetic type and comparing splinted crowns and 3- or 4-unit fixed partial dentures (FPDs) to determine whether 2 dental implants can achieve comparable success when replacing 2, 3, or 4 missing teeth. MATERIAL AND METHODS: Sixty-two adjacent dental implants in 23 participants were investigated. The implants supported noncantilevered restorations: 2 splinted crowns or 3- or 4-unit FPDs. Bone loss was evaluated 3 years after loading from periapical radiographs using AutoCAD software. Nonparametric comparisons were made. The Wilcoxon test was applied to determine homogeneity of related samples. The Mann-Whitney test was applied to measure homogeneity of bone loss in 2 independent samples and the presence/absence of a pontic in the restoration (α=.05). RESULTS: Mean ±standard deviation peri-implant bone loss was 0.9 ±0.7 mm. The peri-implant bone loss of the restorations analyzed was similar to the average values of 1.1 ±0.8 mm for 3- and 4-unit FPDs and 0.8 ±0.6 mm for splinted crowns. The type of prosthodontic restoration and implant position did not show significant influences on bone loss (P>.05). CONCLUSIONS: Mean bone loss values were within an acceptable range. Statistically significant relationships were not found between the restoration types, suggesting that 3 or 4 missing teeth can be replaced by 2 implants. Further studies with longer follow-ups are needed to obtain clinically applicable conclusions.
Authors: Rubén Agustín-Panadero; Irene Bermúdez-Mulet; Lucía Fernández-Estevan; María Fernanda Solá-Ruíz; Rocío Marco-Pitarch; Marina García-Selva; Álvaro Zubizarreta-Macho; Raquel León-Martínez Journal: Int J Environ Res Public Health Date: 2021-05-14 Impact factor: 3.390
Authors: María Costa Castillo; Martín Laguna Martos; Rocío Marco Pitarch; Marina García Selva; Silvia Del Cid Rodríguez; Carla Fons-Badal; Rubén Agustín Panadero Journal: Int J Environ Res Public Health Date: 2022-03-15 Impact factor: 3.390