Alratroot Soha, Khan Shahd, Alkaltham Nora, Siddiqui Intisar Ahmad, Al-Thobity Ahmad M
Intern, College of Dentistry, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia.
Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia.
Saudi Dent J. 2022 Jul;34(5):369-374. doi: 10.1016/j.sdentj.2022.03.004. Epub 2022 Mar 29.
The study's aim was to assess and compare the values of the sagittal condylar angle (SCA), the Bennett angle (BA), and the immediate side shift (ISS) between fully dentate and partially dentate patients, male and female patients, and Saudi and non-Saudi patients. The study also aimed to statistically analyze the correlation of the different condylar movements with tooth loss and tooth wear.
Using the electronic pantograph (Cadiax Compact II), the SCA, BA, and ISS were recorded at a 10-mm condylotrack distance in dentate and partially dentate patients, from both genders, older than 20 years, medically stable, and with normal temporomandibular joint movements and normal activity of masticatory muscles. The recorded average values were compared between the groups using an unpaired t-test.
The average condylar movements between dentate (n = 57) and partially dentate (n = 39) groups revealed no significant differences concerning right SCA, left SCA, right BA, right ISS, and left ISS. However, the left BA showed significant differences ( = 0.011) in the dentate compared with the partially dentate group. Gender (male: n = 24, female: n = 72) showed no statistical significance between groups when measuring SCA, BA, or ISS. When comparing Saudi (n = 78) with non-Saudi patients (n = 18), it was found that the mean right SCA was significantly higher in Saudi than in non-Saudi patients ( = 0.024). Condylar inclination values in relation to tooth wear showed no statistical significance ( > 0.05), except left ISS, which was significantly higher among those who had tooth wear ( = 0.040).
Tooth loss had a major impact on the left BA, while patients with tooth wear had a significantly increased ISS on the left side.
本研究旨在评估和比较全牙列患者与部分牙列患者、男性与女性患者以及沙特患者与非沙特患者之间的髁突矢状角（SCA）、 Bennett角（BA）和即时侧方移位（ISS）的值。该研究还旨在对不同髁突运动与牙齿缺失和牙齿磨损之间的相关性进行统计学分析。
使用电子面弓（Cadiax Compact II），在牙列完整和部分牙列的患者中，于髁道距离为10mm时记录SCA、BA和ISS，这些患者年龄超过20岁，性别不限，医学状况稳定，颞下颌关节运动正常且咀嚼肌活动正常。使用不成对t检验比较各组记录的平均值。
牙列完整组（n = 57）和部分牙列组（n = 39）之间的平均髁突运动在右侧SCA、左侧SCA、右侧BA、右侧ISS和左侧ISS方面无显著差异。然而，与部分牙列组相比，牙列完整组的左侧BA存在显著差异（P = 0.011）。在测量SCA、BA或ISS时，性别（男性：n = 24，女性：n = 72）在各组之间无统计学意义。在比较沙特患者（n = 78）和非沙特患者（n = 18）时，发现沙特患者的平均右侧SCA显著高于非沙特患者（P = 0.024）。除左侧ISS外，与牙齿磨损相关的髁突倾斜值无统计学意义（P>0.05），在有牙齿磨损的患者中左侧ISS显著更高（P = 0.040）。
牙齿缺失对左侧BA有重大影响，而有牙齿磨损的患者左侧ISS显著增加。
