M Ferrari1, E Ferrari Cagidiaco2, C Goracci3, R Sorrentino4, F Zarone4, S Grandini5, Tim Joda6. 1. Department of Medical Biotechnologies, Division of Fixed Prosthodontics, University of Siena, Siena, Italy; Department of Restorative Dentistry, University of Leeds, Leeds, UK. Electronic address: ferrarm@gmail.com. 2. Department of Medical Biotechnologies, Division of Fixed Prosthodontics, University of Siena, Siena, Italy; Department of Medical Biotechnologies, Division of Periodontics, Complutense University, Madrid, Spain. 3. Department of Medical Biotechnologies, Division of Fixed Prosthodontics, University of Siena, Siena, Italy. 4. Department of Neurosciences, Reproductive and Odontostomatological Sciences, University Federico II, Naples, Italy. 5. Department of Medical Biotechnologies, Division of Restorative Dentistry and Endodontics, University of Siena, Siena, Italy. 6. Department of Reconstructive Dentistry, University Center for Dental Medicine, Basel, Switzerland.
Abstract
OBJECTIVES: The objective of this randomized controlled trial was to assess the influence of use of posts as well as the type of posterior tooth (premolars vs molars) for the treatment with lithium disilicate (LS2) partial crowns. MATERIALS AND METHODS: A total of 60 patients were treated with posterior LS2 partial crowns. Two groups (n = 60) were made based on the type of restored tooth: Group 1, premolars and Group 2, molars. The samples of each group were divided into 2 subgroups (n = 30): Subgroup A restored with fiber posts and Subgroup B without them. Clinical and intraoral radiographic examinations were assessed during each recall (6 months and, 1, 2, and 3 years). Kaplan-Meier log-rank test and Cox regression analysis (Pp < 0.05) were applied. RESULTS: Three subgroups showed 100% of survival while group 2 A exhibited the lowest performance (93.3%). The Cox regression analysis showed that the presence of the post was not a significant factor for survival time (Hazard Ratio HR = 0388; CI95% Confidence Interval for H R = 0,1- to 1,5; pp = 017). Tooth type had an influence on survival time that was at the limit of statistical significance (Hazard Ratio HR = 0123; CI95% Confidence Interval for HR = 0 0015- to 0997; p = 005). Particularly, failure risk was greater for premolars. 'Post by tooth type' interactions were not statistically significant (p = 0126). CONCLUSIONS: over a 3-year observation period, the clinical performance of endodontically treated teeth restored with lithium disilicate partial crowns was not significantly affected by the use of a fiber post and by the type of tooth (premolars or molars).
RCT Entities:
OBJECTIVES: The objective of this randomized controlled trial was to assess the influence of use of posts as well as the type of posterior tooth (premolars vs molars) for the treatment with lithium disilicate (LS2) partial crowns. MATERIALS AND METHODS: A total of 60 patients were treated with posterior LS2 partial crowns. Two groups (n = 60) were made based on the type of restored tooth: Group 1, premolars and Group 2, molars. The samples of each group were divided into 2 subgroups (n = 30): Subgroup A restored with fiber posts and Subgroup B without them. Clinical and intraoral radiographic examinations were assessed during each recall (6 months and, 1, 2, and 3 years). Kaplan-Meier log-rank test and Cox regression analysis (Pp < 0.05) were applied. RESULTS: Three subgroups showed 100% of survival while group 2 A exhibited the lowest performance (93.3%). The Cox regression analysis showed that the presence of the post was not a significant factor for survival time (Hazard Ratio HR = 0388; CI95% Confidence Interval for H R = 0,1- to 1,5; pp = 017). Tooth type had an influence on survival time that was at the limit of statistical significance (Hazard Ratio HR = 0123; CI95% Confidence Interval for HR = 0 0015- to 0997; p = 005). Particularly, failure risk was greater for premolars. 'Post by tooth type' interactions were not statistically significant (p = 0126). CONCLUSIONS: over a 3-year observation period, the clinical performance of endodontically treated teeth restored with lithium disilicate partial crowns was not significantly affected by the use of a fiber post and by the type of tooth (premolars or molars).
Authors: Marco Ferrari; Edoardo Ferrari Cagidiaco; Denise Irene Karin Pontoriero; Carlo Ercoli; Kostantinos Chochlidakis Journal: Int J Environ Res Public Health Date: 2022-02-10 Impact factor: 3.390
Authors: Fernando Zarone; Maria Irene Di Mauro; Pietro Ausiello; Gennaro Ruggiero; Roberto Sorrentino Journal: BMC Oral Health Date: 2019-07-04 Impact factor: 2.757