Fracture behavior of root-amputated teeth at different amount of periodontal support - a preliminary in vitro study.

ABSTRACT: BACKGROUND:The purpose of this study was to evaluate the effect of the amount of periodontal support on the fracture resistance of root-amputated maxillary molar teeth restored with either direct class. I. restorations or class II. mesio-occluso-distal (MOD) indirect overlay restorations with cuspal coverage. METHODS:Sixty sound maxillary first molars were collected and randomly divided into four groups. In Groups 1 and 2, MOD cavities were prepared and all cusps were reduced by 2 mm, whereas in Group 3 and 4, only a conservative Class I. cavity was prepared. Subsequently, root canal treatment was performed and the mesio-buccal roots were amputated. Groups 1 and 2 were restored with indirect composite overlay, while Groups 3 and 4 received direct composite fillings. After restoration, teet

SUBMITTER: Szabo B 

PROVIDER: S-EPMC6882155 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature