Kapanışı olmayan dişlerde; uzama, dönme, devrilme sıklığı ve temporomandibular düzensizlikler ile ilgili çalışma

Amaç: Bu çalışmanın amacı, kapanışı olmayan dişlerde uzama, dönme ve devrilme sıklığı ile oklüzal girişimler ve molar dişlerin uzaması ile temporomandibuler düzensizlikler (TMD) arasındaki ilişkinin belirlenmesidir.Gereç ve Yöntem: Çalışma grubu posterior diş kaybı ile başvuran191 hastadan oluşmuştur. Bu dişlerin (462 molar diş) uzama, dönme ve devrilme kayıtları incelendi. Diş kaybı ve TMD belirtileri saptandı. Bağımsız değişkenler karşılaştırılması için Ki-kare testi ve Fisher kesin olasılık testi kullanılmıştır. TMD için Pearson korelasyon yaygınlık parametreleri kullanıldı.Bulgular: 291 azı dişinde, uzama belirtisi gözlemlenmedi. 119 azı dişinde, hafif uzama, 52 azı dişinde, orta ve şiddetli uzama görüldü. 184 azı dişinde, dönme belirtisi görülmedi, 203 molar dişte, 150den daha az, 75 dişte ise 150 den fazla dönme tespit edildi. 274 dişte devrilme gözlenmezken, 108 dişte 150 den az devrilme ve 80 dişte ise 150 den fazla devrilme gözlemlendi. TMD ortalama skorları ile genç yaş grubu ve cinsiyet (kadın) istatistiksel olarak anlamlı olarak bulundu (Yaş: P < 0.05. Cinsiyet: P < 0.001).Sonuç: Azı dişlerinde dönme bulgusu daha çok maksillada iken, uzama ve devrilme bulgusu daha çok mandibulada saptanmıştır. TMD ve diş kaybı belirtileri arasında anlamlı sonuçlar bulunmuştur, ancak bu sonuçlar molar destek kaybının, TMD hazırlayıcı faktörleri arasında olduğunu desteklemektedir

A study of the incidence of overeruption, rotation, tipping in unopposed molars and temporomandibular disorders

Aim: The purpose of this study was to determine the incidence of overeruption, rotation and tipping in unopposed posterior teeth and study the association among temporomandibular disorders (TMD).Material and Method: The study group consisted of 191 patients with posterior tooth loss. These teeth (462 molars) overeruption, rotation and tipping records were reviewed. Tooth loss and TMD symptoms were detected. In order to compare the variables Chi-square tests and Fisher’s exact probability test were used. For TMD, Pearson correlation prevalence parameters were used.Results: 291 molars showed no signs of overeruption. 119 molars showed slight, 52 molars had erupted moderate to severe eruption. 184 molars had no signs of rotation, 203 were rotated less than 15°, while 75 molars were rotated more than 15°. 274 molars showed no signs of tipping whereas, 108 had tipping less than 15°, and 80 molars had tipping of greater than 15°. Younger age group and female gender were found to be statistically significant regarding mean scores of TMDs (Age: P < 0.05, Gender: P < 0.001)Conclusions: Molar rotation was more frequent in the maxilla; whereas overeruption and tipping were more common in the mandible Significant associations between the signs of TMD and tooth loss were found, but the current results does not support the concept that loss of molar support is an etiologic factor in TMDs

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