Silness J, Berge M, Johannessen G
Department of Prosthodontics, School of Dentistry, University of Bergen, Norway.
Acta Odontol Scand. 1995 Oct;53(5):331-3. doi: 10.3109/00016359509005996.
This report was derived from cross-sectional and longitudinal analyses of prevalence, pattern, and severity of incisal wear in 64 dental students who had virtually complete dentitions at the first examination and unchanged dentitions at the re-examination. They were first examined in 1991 and re-examined after 24 months in 1993. The average age of the students in 1991 was 23 +/- 1.7 years. Assessment of incisal wear was made on stone casts based on silicone impression material in accordance with the Incisal wear Index (IwI). The results showed that the prevalence of incisal wear had not changed during the observation period. The severity of incisal wear for maxillary and mandibular central and lateral incisors had remained essentially the same, whereas the severity of wear of maxillary and mandibular canines had increased during the observation period. There was no statistically significant relationship between age and IwI. The wear pattern found for anterior teeth is discussed in relation to the cuspid protection and the group function theories of occlusion.
本报告源自对64名牙科学生切牙磨损的患病率、模式和严重程度的横断面及纵向分析。这些学生在首次检查时牙列基本完整，复查时牙列未变。他们于1991年首次接受检查，并于1993年在24个月后进行复查。1991年学生的平均年龄为23±1.7岁。根据切牙磨损指数（IwI），基于硅橡胶印模材料制作的石膏模型对切牙磨损进行评估。结果显示，在观察期内切牙磨损的患病率没有变化。上颌和下颌中切牙及侧切牙的切牙磨损严重程度基本保持不变，而在上颌和下颌尖牙的磨损严重程度在观察期内有所增加。年龄与IwI之间没有统计学上的显著关系。结合尖牙保护和组牙功能咬合理论讨论了前牙的磨损模式。
