Szukana fraza: [Abstrakt = "ements was assessed. Material and methods The study involved 100 patients of both sexes, aged 20 to 42 years, who were admitted in a private dental office in Wolbrom for dental treatments between December 2019 and February 2021. The patients were divided into two groups of 50 people each. Assignment to group I or II was randomized based on observed occlusal disorders during the clinical trial. In the first group, corrective procedures were performed in the form of selective grinding of premature contacts. In the second group the reconstructive procedures were performed to build up too low clinical crowns using composite material. The studies were carried out in accordance with the guidelines of the Bioethics Committee of the Regional Medical Chamber in Krakow, issued in the opinion number 310 \/ KBL \/ OIL \/ 2019 of December 10, 2019. The patients participating in the study were fully informed regarding the aim of the study, voluntary attendance policy, the method and scope of corrective procedures, contraindications for the performance and the possibility to leave the group at any stage of the project without giving a reason. All patients underwent a dental check\-up, specialist dental examination as well as the supplementary tests such as\: orthopantomogram, a test of electrical activity of masseter muscles. The subjective study was conducted on the basis of an"]

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