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Prevalence of anterior cross bite in preadolescent orthodontic patients attending an orthodontic clinic

Authors:

S N Vithanaarachchi ,

Department of Community Dental Health, Faculty of Dental Sciences, University of Peradeniya, LK
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L S Nawarathna

Department of Statistics and Computer Sciences, Faculty of Science, University of Peradeniya, LK
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Abstract

Introduction Anterior cross bite is a common malocclusion and early treatment is indicated. Determining its prevalence is important to plan orthodontic services.

Objective To assess the prevalence and associated features of anterior cross bite in pre-adolescent patients attending an orthodontic clinic.

Methods A hospital based cross sectional study was conducted in patients attending the Division of Orthodontics, University Dental Hospital, Peradeniya.  Seven hundred and twenty one consecutive patients were examined for anterior cross bite. All patients who consented were examined and anterior cross bite were recorded when maxillary incisor/s occluded lingually to mandibular incisor/s in centric occlusion. Mandibular displacement, gingival recession, tooth mobility, presence of posterior cross bite and skeletal pattern were also assessed.

Results Sample consisted of 721 patients, of whom 193 (26.7%) had anterior cross bite. Twenty two (11.4%) had both anterior and posterior cross bite. Among patients with anterior cross bite 62% had unilateral involvement and 38% had bilateral involvement. One hundred (51.8%) had involvement of only one incisor while 64 (33.2%) had involvement of two incisors. Class 1 skeletal pattern was found in 103 (53.37%) patients with anterior cross bite, Class 2 skeletal pattern in 33 (17.1%) and Class 3 skeletal pattern in 57 (29.53%). Mandibular displacement was present in 93 (48.19%) patients and 5 (2.5%) showed tooth wear in anterior cross bite. Gingival recession was seen in 43 (22.3%) and tooth mobility of involved lower incisors in 12 (6.2%).

Conclusion The prevalence of anterior cross bite is high in pre-adolescent patients attending an orthodontic clinic.

How to Cite: Vithanaarachchi, S.N. & Nawarathna, L.S., (2017). Prevalence of anterior cross bite in preadolescent orthodontic patients attending an orthodontic clinic. Ceylon Medical Journal. 62(3), pp.189–192. DOI: http://doi.org/10.4038/cmj.v62i3.8523
Published on 25 Sep 2017.
Peer Reviewed

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