Clinical assessment of occlusal contact variables on coronal tooth microstrain: A cross-sectional study
Abstract
PURPOSE
The influence of different occlusal contact variables on tooth strain has been less explored in the literature. The purpose of this study was to investigate the influence of different occlusal contact locations in mandibular molars on occlusal bite force, bite force distribution, and the resultant coronal microstrain.
MATERIALS AND METHODS
A split-mouth, cross-sectional study was planned. Twenty-nine participants aged between 20 and 40 years with healthy dentition were studied. A 100-µm articulating paper and an iTero digital scan were used to locate occlusal contacts in mandibular molars. The control group included samples with only functional cusp contacts. The test group included samples with functional and nonfunctional cusp contacts. Upon sample categorization, the bite force at the maximum intercuspation position was evaluated in the mandibular molar region using a Tekscan B201 FlexiForce sensor for all patients. In contrast, 14 patients were evaluated by T-Scan 10 Novus to check occlusal bite force distribution. Subsequently, buccal and lingual coronal microstrain after a bite load was evaluated in all the selected mandibular molars using strain gauges.
RESULTS
The occlusal bite force (N) and the bite force distribution values (%) of the test group and control group were not significantly different (p = 0.96; 0.09). The lingual coronal microstrain (150.96 ± 15.84 με) in the control group was significantly lower than the buccal coronal microstrain (253.36…
How strong is the evidence?
Evidence Hub reads this as a cross-sectional, done in people. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause. Reported size: 14 participants or records.
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