Department of Restorative Sciences, Faculty of Dentistry, Kuwait University, Jabriya, Kuwait.
Med Princ Pract. 2013;22(6):545-9. doi: 10.1159/000353466. Epub 2013 Aug 15.
The aim of this study was to evaluate a possible relationship between preferred chewing side (PCS) and the anterior guidance angle.
Forty dental nurses and technicians, aged 24-46 years, were each given a piece of chewing gum, which they chewed for about 3 min. At 7 regular intervals (every 15 s), they were interrupted by the principal investigator (P.L.) in order to observe on which side of their mouths they had the bolus of chewing gum. Moulds of their jaws were made and the position of the maxillary arch relative to temporomandibular joints was recorded with a facebow and transferred to a semi-adjustable articulator. After mounting the stone casts of each subject, a measure of the anterior guidance angle was taken with an adjustable incisal table.
Of the 40 subjects, 14 (35%) presented a PCS. Among the 14 subjects who preferred a chewing side, there was a correlation between the PCS and a low angulation of teeth constituting the anterior guidance on that side, but this correlation was statistically nonsignificant.
In this study, we found that unilateral chewing creates uneven wear on the anterior teeth and changed the anterior guidance angulation.
本研究旨在评估偏侧咀嚼习惯（PCS）与前导牙合角之间可能存在的关系。
40 名年龄在 24-46 岁的牙科护士和技师每人被给予一块口香糖，让他们咀嚼约 3 分钟。在 7 个固定间隔（每 15 秒一次），由主要研究者（P.L.）打断他们，以观察他们在嘴巴的哪一侧有咀嚼口香糖的团块。对他们的颌骨进行印模，并使用面弓记录上颌弓相对于颞下颌关节的位置，并将其转移到半可调式牙合架上。在对每个受试者的石膏模型进行安装后，使用可调切导表测量前导牙合角。
在 40 名受试者中，有 14 名（35%）表现出 PCS。在 14 名偏好单侧咀嚼的受试者中，PCS 与构成该侧前导牙合的牙齿的低角度之间存在相关性，但这种相关性无统计学意义。
在这项研究中，我们发现单侧咀嚼会导致前牙不均匀磨损，并改变前导牙合角。
