Medical University of Bialystok, Department of Prosthodontics, M. Sklodowska-Curie Str. 24a, Bialystok 15-276, Poland.
Medical University of Bialystok, Department of Dental Techniques, Washington Str. 13, Bialystok 15-269, Poland.
J Prosthodont Res. 2017 Oct;61(4):480-490. doi: 10.1016/j.jpor.2017.03.003. Epub 2017 Mar 27.
The aim of the study was to evaluate functional parameters of the occlusion in complete denture wearers before and after prosthetic treatment.
The sample used as the basis for the present study consisted of 50 healthy Caucasian patients (35 women and 15 men), aged from 44 to 86 years (mean=69.18±10), with a total deficiency of teeth. All patients received new complete dentures. Each patient underwent lateral radiograph with the presence of complete dentures, both before (initially existing dentures) and after the prosthetic treatment (new restorations). Cephalometric analysis was based on the Ricketts and McNamara criteria. In order to assess the functional parameters of the occlusion T-scan III analysis was conducted. The following parameters were measured: occlusion - and disclusion time.
Statistically significant differences of functional parameters obtained before and 3 months after the treatment were noted in the whole study group. Both before and after therapy occlusion time was longer in women than in men. No statistically significant link was noted between functional parameters in occlusion and age of the patients, denture wearing time, and edentulous period. Some relationships were noted between occlusion time and cephalometric parameters associated with anterior facial height.
Reconstruction of the surface of artificial teeth and vertical occlusal dimension affects the sustainability of parameters of occlusion and balance of forces in centric occlusion. The progressive shortening of occlusion time during the period of monitoring may be considered as a sign of progressive adaptation.
本研究旨在评估全口义齿佩戴者在修复治疗前后的咬合功能参数。
本研究的样本由 50 名健康的高加索患者（35 名女性和 15 名男性）组成，年龄在 44 至 86 岁之间（平均 69.18±10），均有全牙列缺失。所有患者均接受了新的全口义齿。每位患者在佩戴全口义齿时进行侧位放射检查，分别在治疗前（初始义齿）和治疗后（新修复体）进行。头影测量分析基于 Ricketts 和 McNamara 标准。为了评估咬合的功能参数，进行了 T-scan III 分析。测量了以下参数：咬合-和非咬合时间。
在整个研究组中，治疗前后的功能参数均有统计学显著差异。在治疗前和治疗后，女性的咬合时间均长于男性。在患者的年龄、义齿佩戴时间和无牙期与咬合功能参数之间未发现统计学显著关联。在咬合时间与与前面部高度相关的头影测量参数之间注意到了一些关系。
人工牙表面重建和垂直咬合维度会影响正中咬合时的咬合参数的可持续性和力的平衡。在监测期间，咬合时间的逐渐缩短可被视为渐进适应的标志。
