Groot, Michael (2022) Klinische evaluatie van partiele posterior lithiumdisilicaat restauraties adhesief bevestigd met RelyX unicem in combinatie met immediate dentin sealing. thesis, Dentistry.
Full text available on request.Abstract
Background Partial indirect lithium disilicate (LDS) restorations can be used to replace lost tooth material. An adhesive luting procedure with the use of immediate dentin sealing (IDS) is a proven method for the cementation of these restorations. For this luting procedure a conventional posterior composite is often used as luting material. The aim of this study however is to evaluate the clinical performance of these LDS restorations after six years, when RelyX Unicem (a self-adhesive resin cement) is used as luting material with the use of IDS. With the constructed research question: What is the survival and the success of partial LDS restorations luted with RelyX Unicem with the use of IDS after six years? Material and methods The database of an acknowledged Dutch restorative dentist was used to gather data, X-rays and photographs of all partial LDS restorations which were placed by following a protocol used in comparable studies. These photographs were judged and rated with the use of the modified USPHS criteria for dental restorations. The database included information about the number of covered cusps, the restauration being placed on a molar or premolar, the restauration being placed on a maxillary or mandibular element, the presence of neighboring elements, the present of antagonistic elements and the pre-restorative endodontic status of the element to assess the influence of these independent variables. Results With the use of Kaplan Meyer tests the survival and success rates were calculated. A survival of 98,1% (±SD=1,4) was found six years after placement of the restorations. Two of the 216 restorations were lost to, for the researcher, unknown reasons. The success was found to be 51,0% (±SD 8,4) for the X-ray rated restorations with a small gap being the most common event. For the restorations rated with the use of photographs the found success was 0,00% (SD±0,0) with all restorations showing marginal gaps or marginal discoloration after six years. No influence of the independent variables was found with the use of a cox-regression analysis. Conclusion With the high survival rates, it is safe to conclude that RelyX Unicem can be used as a luting material for the use of partial indirect LDS restorations with the use of IDS. Although the success rates are disturbingly low the clinical significance is debatable. Since previous studies with bigger samples have shown better success rates when using RelyX Unicem as a luting cement it is advised to repeat this or a similar study with a bigger sample size for the photographs.
| Item Type: | Thesis (UNSPECIFIED) |
|---|---|
| Supervisor name: | van den Breemer, Dr. C.R.G. and Gresnigt, Dr. M.M.M. |
| Faculty: | Medical Sciences |
| Date Deposited: | 09 May 2023 11:40 |
| Last Modified: | 09 May 2023 11:40 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/3517 |
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