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J Dent Res Dent Clin Dent Prospects. 2022;16(1): 24-28.
doi: 10.34172/joddd.2022.004
PMID: 35936940
PMCID: PMC9339745
Scopus ID: 85132451344
  Abstract View: 409
  PDF Download: 328
  Full Text View: 37

Original Article

The prevalence of different types of occlusal relationships based on the type of terminal plane in primary dentition: a study among 3- to 6-year old children in Tbilisi, Georgia

Elene Golovachova 1* ORCID logo, Tinatin Mikadze 1, Manana Kalandadze 2

1 Department of Orthodontics, Faculty of Clinical and Translational Medicine, Tbilisi State University, Tbilisi, Georgia
2 Pediatric Dentistry Department, Faculty of Medicine, Tbilisi State University, Tbilisi, Georgia
*Corresponding Author: Corresponding author: Elene Golovachova, Email: , Email: helengolovachova@yahoo.com

Abstract

Background. Primary dentition takes the most important role in the development of permanent dentition. Primary second molars determine the eruption and position of permanent first molars. Early diagnosis and treatment could prevent the establishment of occlusal anomalies and deformities, therefore this study aimed to collect data about the prevalence of malocclusions based on the deciduous second molar terminal planes among the Tbilisi preschoolers.

Methods. A total of 396 children aged 3-6 years, with an equal number of male and female subjects, were examined in kindergartens drawn from ten districts of Tbilisi, using the PPS (probability proportional to size) method. The relationship between distal surfaces of primary second molars was evaluated and recorded according to Baume’s classification. The significance level is 0.05 for all statistical tests.

Results. Out of investigated preschoolers, 52.7% showed the flush terminal plane, followed by the distal step in 21.2% and mesial step in 26.1% of cases. There were no significant differences in genders. The most prevalent relationship between deciduous second molars was the flush terminal plane, with equal distribution in all age groups. The frequency of distal step decreased with age, more frequently recorded in the 3 to 4 year age group. The mesial step was mostly recorded in 3-4 and 5-6 year groups.

Conclusion. The flush terminal plane is the most frequent molar relationship, followed by mesial and distal step. Prevalence of distal mesial step significantly decreased with age, while mesial step relationship showed the tendency to increase. The flush terminal plane showed little change with age.

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Submitted: 03 Jun 2021
Revision: 20 Jul 2021
Accepted: 12 Dec 2021
ePublished: 29 May 2022
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