Open AccessThe Relationship Between Maxillary and Mandibular Base Lengths and Dental Crowding in Patients with True Class II Malocclusions
Author(s) -
Tanzin Palkit,
Isha Aggarwal,
Yagyeshwar Malhotra,
Muhammad Rehan Uppal,
Merry Goyal,
Neetika Singh
Publication year - 2020
Publication title -
international healthcare research journal
Language(s) - English
Resource type - Journals
ISSN - 2456-8090
DOI - 10.26440/ihrj/0407.10280
Subject(s) - crowding , medicine , dentistry , malocclusion , orthodontics , occlusion , psychology , surgery , neuroscience
Orthodontists, for a long time have considered that occlusion and facial beauty are so interdependent that they must be equal goals of treatment.AIM: To validate the relationship between maxillary and mandibular effective lengths and dental crowding in patients with Class II malocclusions. MATERIALS AND METHOD: A sample of 40 orthodontic patients with complete bilateral Class II malocclusions in the permanent dentition (25 males, 15 females) who were divided into two groups based on severity of pre-treatment mandibular anterior dental crowding. The maxillary and mandibular effective lengths and tooth-arch size discrepancies were measured on the pre-treatment Lateral cephalograms and initial casts, respectively. Intergroup comparisons of apical base lengths were assessed with independent t-tests. Correlation between effective length and dental crowding was assessed by Pearson's correlation coefficient (P <.05).RESULTS: Subjects with Class II malocclusion and moderate to severe crowding had significantly smaller maxillary and mandibular effective lengths compared with subjects without crowding and with minimal dental crowding. A weak inverse correlation was also found between maxillary and mandibular effective lengths and the severity of dental crowding. CONCLUSION: In patients with complete Class II malocclusion, decreased maxillary and mandibular effective lengths constitute a significant factor associated with dental crowding.