Abstract
Objective: To evaluate the prevalence and gender-wise distribution of peg-shaped maxillary permanent lateral incisors among populations in Saudi Arabia representing different geographical locations (Saudi, Jordan, Egypt, Syria, Philippine, Pakistan, India and Bangladesh). Material and Methods: Panoramic radiographs of 9945 patients attending outpatient university dental clinics of College of Dentistry, Jouf University, Saudi Arabia between February 2014 and January 2018 were collected from the archives randomly. Two calibrated investigators examined the data, which were collected from the dental radiology department archives with prior permission from the authorities. The anomalies of maxillary lateral incisors (right and left) were investigated. Results: Among all geographic locations, the prevalence of peg laterals was more in males in comparison to females except in Pakistani and Philippine populations. Among the Saudi population, peg laterals' prevalence was more in case of right lateral incisor than the left incisor. Conclusion: A higher prevalence of peg laterals was found in Saudi. Conclusion: A higher prevalence of peg laterals was found in Saudi region, followed by Egypt. Among all geographic locations, the prevalence of peg laterals was higher in males than females except for Pakistan and Philippines populations. Among Saudi population prevalence of peg laterals was found to be higher in case of right lateral incisor when compared to the left.
Highlights
A peg-shaped tooth, by definition, is a tooth with incisal and mesiodistal width of the crown shorter than the cervical width [1]
A higher prevalence of peg laterals was found in Saudi region, followed by Egypt
The prevalence of peg laterals was higher in males than females except for Pakistan and Philippines populations
Summary
A peg-shaped tooth, by definition, is a tooth with incisal and mesiodistal width of the crown shorter than the cervical width [1]. Peg laterals' occurrence is multifactorial, with the main emphasis on the presence of an underlying genetic factor. The significance of such mechanism that determines the tooth size and morphological features have been shown by various studies [3,4,5,6,7]. The underlying genetic mechanism that results in agenesis of the maxillary permanent lateral incisors is said to result in the formation of peg-shaped laterals [8,9]. In a study carried out in Gizan province of Saudi Arabia, the prevalence of peg-shaped lateral incisors was reported to be 0.37% [13], in Pakistan it was reported to be 1.3% [14], 2.58% in Indian population [15], and 2.3% in Jordanian population [16]. The prevalence rates have varied in different geographic locations, races and genders
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