A Radıographıc Evaluatıon of Thırd-Molar Agenesıs and Assocıated Dental Anomalıes a Group of Tur- kısh Populatıon

Year 2013, Volume: 40 Issue: 1 - Volume: 40 Issue: 1, 1 - 6, 01.02.2013

S. Kutalmıs Büyük Kenan Cantekin Ahmet Ercan Sekerci Salih Doğan

Abstract

The aim of this study was to investigate the frequency of dental anomalies in a Turkish population with different patterns of third-molar agenesis, comparing them with patients without thirdmolar agenesis. A sample of 1552 patients with agenesis of at least 1 third molar was divided into 4 groups according to the third-molar agenesis pattern, and a control group of 402 patients without third-molar agenesis was randomly selected from the Erciyes University-Oral and Maxillo Facial Radiology archives. Panoramic radiographs were used to determine the associated dental anomalies, such as hypodontia, hyperdontia, impaction, dilaceration, microdontia, ectopic eruption, transposition, and transmigration. The Pearson chi-square and Fisher exact tests were used to determine the differences in the distribution of the associated dental anomalies among the groups. When we compared the groups according to the various third-molar agenesis patterns, we found that agenesis of other teeth was more common in patients with agenesis of 3 and 4 third molars. Additionally, the patients with agenesis of 4 third molars exhibited maxillary lateral-incisor microdontia more frequently. Another important finding was a higher prevalence of total dental anomalies in patients with agenesis of 3 and 4 third molars compared with the control group. Permanent tooth agenesis, microdontia of maxillary lateral incisors, and total dental anomalies are more frequently associated with agenesis of 4 third molars than with the presence of third molars.

Keywords

Dental anomalies, tooth agenesis, panoramic radiography

Bir grup Türk popülasyonunda üçüncü molar eksikliği ile ilişkili dental anomalilerin radyografik olarak değerlendirilmesi

Abstract

Bu çalışmanın amacı, bir grup Türk popülasyonunda farklı üçüncü molar agenezisi paternleri varlığındaki dental anomalileri, üçüncü molar agenezisi olmayan hastalarla karşılaştırmaktır. En az 1 adet üçüncü molar agenezisi olan 1552 hasta, üçüncü molar agenezisi paternine göre 4 gruba ayrılmış ve üçüncü molar agenezisi olmayan 402 hasta ise kontrol grubu olarak Erciyes Üniversitesi Ağız, Diş ve Çene Radyolojisi arşivinden rastgele seçilmiştir. Panoramik radyograflar hipodonti, hiperdonti, gömülü kalma, dilaserasyon, mikrodonti, ektopik erüpsiyon, transpozisyon ve transmigrasyon gibi dental anomalileri belirlemek için kullanılmıştır. Pearson ki-kare ve Fisher exact testleri, gruplar arasındaki dental anomalilerin dağılımındaki farklılıkları belirlemek için kullanılmıştır. Farklı üçüncü molar agenezisi paternlerine göre grupları karşılaştırdığımızda, 3 ve 4 adet üçüncü molar agenezisi olan hastalarda, diğer daimi dişlerde de daha fazla oranda agenezis tespit ettik. Ayrıca, 4 tane üçüncü molar agenezisi olan hastalar daha yüksek oranda maksiller lateral keser dişlerde mikrodontik yapı gösteriyorlardı. Diğer önemli bir bulgu da, kontrol grubu ile karşılaştırıldığında 3 ve 4 adet üçüncü molar agenezisi bulunan hastalarda toplam dental anomali prevalansının yüksek olmasıdır. Daimi diş eksikliği, maksiller lateral keserlerin mikrodontik yapıları ve total dental anomaliler tüm üçüncü molarların agenezisinin üçüncü molarların tam olduğu durumlardan daha sık oranda gözlenmektedir.

Keywords

Dental anomaliler, diş eksikliği, panoramik radyografi

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