Prevalence of hypodontia in the permanent dentition of Macedonian population

Abstract

Hypodontia or tooth agenesis is a condition at which the patient is missing one or more teeth due to a failure of those teeth to develop. This is not only an aesthetic, but also a functional deficiency. The incidence of congenitally missing teeth depends on etiological factors that affect tooth development, as well as which dentition is concerned, sex or race and geographic distribution. The tooth agenesis is mostly seen in teeth that are formed last in a given class (lateral incisors, second premolars and third molars). The aim of this study was to calculate the prevalence of congenitally missing teeth in population of FYROM and, through a review of the literature, to compare these results to other populations in the world.For this purpose a retrospective, transversal and cross-sectional study was made, where dental history and anamnesis of 8160 patients (3671 males and 4489 females) were examined, as well as their panoramic radiographs. The patients were 8-18 years old. The data was statistically analyzed with programme Statistica 7.0. The prevalence of hypodontia population of FYROM was 7.52%. Most commonly congenitally missing tooth in patients with hypodontia was mandibular second premolar (35.5% left and 34.53% right). Tooth agenesis predominated in females and in ethnic Albanian population, without significance.

The Prevalence of Hypodontia and Hyperdontia in Orthodontic Patients

“…Numerous studies have reported that tooth agenesis is more common in the mandible than in the maxilla (6,7,16,18), and these results were in agreement with our results. However, other studies have shown that the tooth agenesis was dominantly in the maxilla (8,15,17).…”

“…The reported prevalence of hypodontia, excluding the third molar, varies from 4.30% to 9.0% in the population of orthodontic patients (5,7,11,16,17) and from 1.11% to 11.01% in the population of other dental patients (3,4,6,8,12,18). The wide range of prevalence of hypodontia may be attributed to differences in sampling methods and sample size, as well as ethnic and racial differences.…”

Prevalence of developmental dental anomalies in Serbian orthodontic patients

“…to the most distal tooth in the group affecting second premolars and lateral incisors, as well as third molars [1]. Thus, these teeth are frequently affected by agenesis (4.28-7.52%) which is in accordance with our results [4][5][6][7]18]. A rare occurrence of oligodontia was reported in the Italian population (0.08%) which is in agreement with our result (0.09%) [24].…”

“…Missing teeth were the most frequent abnormality of tooth number in the present sample of Serbian orthodontic patients (12.9%). The overall prevalence of missing teeth in recent studies was 0.027-21.6% [14,16,[18][19][20][21][22]. Such considerable differences in results could be explained by variation in sample composition and size, ethnicity and methodology.…”

Assessment of Prevalence and Gender Distribution of Congenitally Missing Maxillary Lateral Incisors

“…Oligodontia is termed as a rare developmental dental anomaly in humans characterised by the absence of six or more teeth, whereas hypodontia is defined as the developmental absence of one or more teeth excluding the third molars. It is one of the most common dental anomalies and has a negative impact on both esthetics and function (Acev and Gjorgova, 2014…”