Devi Laishram Bijaya, Keisam Avinash, Singh Heisnam Philip
Department of Orthodontics and Dentofacial Orthopedics, Dental College, Regional Institute of Medical Sciences, Imphal, India.
Department of Community Medicine, Jawaharlal Nehru Institute of Medical Sciences, Imphal, India.
J Oral Biol Craniofac Res. 2022 Jan-Feb;12(1):86-89. doi: 10.1016/j.jobcr.2021.10.012. Epub 2021 Nov 3.
Any irregularity of the teeth or a mal-relationship of the dental arches is known as malocclusion. Among all the oro-facial problems, tooth decay is considered the most prevalent one followed by periodontal disease and dental malocclusion. Dental malocclusion is not a life-threatening condition. However, it is closely related to an individual's self-esteem and psychosocial wellbeing. The prevalence of malocclusion varies among different ethnic groups, age-groups, and gender.
This study was conducted with the objective to find out the prevalence of normal occlusal traits and to identify the proportion of different types of malocclusions among dental and nursing students of Seven North-Eastern states studying at a tertiary care Medical Institute.
This cross-sectional study included 432 students with a mean age of 21.42 years, who satisfied the inclusion criteria. Inclusion criteria consisted of the presence of all permanent teeth with or without third molars. The oral cavity was examined using a sterile mouth mirror and flashlight followed by evaluation of all the occlusal relationships in centric occlusion position (COP). COP was achieved by asking the participant to swallow, and then to bite on his or her teeth together. The occlusion traits were assessed as normal occlusion or malocclusion using the first permanent molars as described by E.H. Angle and deviation from line of occlusion. Descriptive statistics like mean and proportions were calculated.
The prevalence of normal occlusal traits was 48.4%, and that of malocclusion was 51.6%. Class I malocclusion was most prevalent occlusal trait followed by Class II malocclusion and Class III malocclusion showed the least prevalence.
Class I malocclusion was most prevalent followed by Class II malocclusion and Class III malocclusion showed the least prevalence.
牙齿的任何不规则或牙弓的错关系被称为错牙合畸形。在所有口腔面部问题中，龋齿被认为是最普遍的，其次是牙周病和牙齿错牙合畸形。牙齿错牙合畸形并非危及生命的疾病。然而，它与个人的自尊和心理社会幸福感密切相关。错牙合畸形的患病率在不同种族、年龄组和性别之间有所不同。
本研究旨在找出正常咬合特征的患病率，并确定在一所三级医疗学院学习的东北七个邦的牙科和护理专业学生中不同类型错牙合畸形的比例。
这项横断面研究纳入了432名平均年龄为21.42岁且符合纳入标准的学生。纳入标准包括所有恒牙的存在与否（包括或不包括第三磨牙）。使用无菌口镜和手电筒检查口腔，随后在正中咬合位（COP）评估所有咬合关系。通过要求参与者吞咽，然后一起咬牙齿来达到COP。根据E.H. Angle描述的方法，以第一恒磨牙和咬合线偏差为依据，将咬合特征评估为正常咬合或错牙合畸形。计算了均值和比例等描述性统计数据。
正常咬合特征的患病率为48.4%，错牙合畸形的患病率为51.6%。I类错牙合畸形是最普遍的咬合特征，其次是II类错牙合畸形，III类错牙合畸形的患病率最低。
I类错牙合畸形最普遍，其次是II类错牙合畸形，III类错牙合畸形的患病率最低。
