Prevalence and Types of Dental Anomaly in a Thai Non-Syndromic Oral Cleft Sample
Tasanee Wangsrimongkol DDS, MS, PhD*, Montian Manosudprasit DDS, MDS*, Poonsak Pisek DDS*, Nisa Chittiwatanapong DDS*
Affiliation : * Department of Orthodontics, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
Objective : To investigate the prevalence and characteristics of dental anomalies (DAs); missing teeth (MT), dens-evaginatus
(D-E), dens-invaginatus, dilaceration, fusion, gemination, macrodontia, microdontia (Micro), supernumerary teeth (SNT),
and taurodontism, in permanent teeth among subjects with non-syndromic oral cleft.
Material and Method: This cross-sectional study was designed to assess DAs from diagnostic records; comprising panoramic
radiograph, intraoral photographs, dental casts, and orthodontic clinic charts of 280 Northeastern Thai subjects, mean age
10.3+3.2 years. Chi-square test was used to compare DA prevalences among cleft phenotypes and genders.
Results : There were one or more teeth with DAs in 89.6% of the study population. Highest prevalence was MT (60.4%)
followed by Micro (41.4%), dilaceration (6.4%), SNT (6.1%), and 0.4% in D-E, fusion, gemination, and taurodontism. The
most prevalent MT was found in 70.7% of subjects in bilateral cleft lip and palate group.
Conclusion : The two predominant DAs were MT and Micro, higher prevalences being found with the more severe cleft
conditions. The most affected teeth were cleft-site lateral incisors. There were no differences in distribution of DA in male and
female.
Keywords : Cleft lip, Cleft palate, Dental anomaly, Prevalence, Thai
