Relation of Two Different Dental Age Determination Methods to Chronological and Bone Age in a South Turkish Children Population

Abstract

Objectives: The aim of the study is to assess the relation of Demirjian’s and Nolla’s dental age determination methods with chronological age and bone age in Turkish children aged between 10-15. Methods: In the retrospective study, 717 children were included, their chronological age and bone age in accordance with Greulich-Pyle Atlas by evaluating left hand wrist radiograms, dental age in accordance with Demirjian’s and Nolla’s methods by using panoramic radiograms were analyzed. Statistical analyses were performed using SPSS version 23.0 for Windows (SPSS Inc., Chicago, Illinois, USA). Results: The bone age and the dental ages calculated according to Demirjian’s and Nolla’s methods was found higher than the chronological age by +0.29 year, +0.77 year and +0.23 year, respectively. The closest result to chronological age came from Nolla’s method. Conclusions: In contrast to the previous studies in the South Turkish population, Demirjian method was found to give incompatible results. In this study, it was shown that Nolla method is more reliable in determining dental age for this population. In addition, the bone age and dental age estimated according to Nolla methods were quite similar to each other.

Keywords

• Chronological age
• Bone age
• Dental age
• Demirjian’s method
• Nolla’s method

Güney Türk Çocuk Popülasyonunda İki Farklı Diş Yaşı Tespit Yönteminin Kronolojik Yaş ve Kemik Yaşı ile İlişkisi

Abstract

Amaç: Çalışmanın amacı, 10-15 yaş aralığındaki Türk çocuklarında Demirjian ve Nolla'nın diş yaşı belirleme yöntemlerinin kronolojik yaş ve kemik yaşı ile ilişkisini değerlendirmektir. Yöntem: Retrospektif çalışmaya 717 çocuk dahil edildi, sol el bilek radyogramları değerlendirilerek Greulich-Pyle Atlas'a göre kronolojik yaşları ve kemik yaşları, panoramik radyogramlar kullanılarak Demirjian ve Nolla'nın yöntemlerine göre diş yaşları analiz edildi. İstatistiksel analizler Windows için SPSS sürüm 23.0 (SPSS Inc., Chicago, Illinois, ABD) kullanılarak yapıldı. Bulgular: Demirjian ve Nolla'nın yöntemlerine göre hesaplanan kemik yaşı ve diş yaşları, kronolojik yaştan sırasıyla +0,29 yıl, +0,77 yıl ve +0,23 yıl yüksek bulundu. Kronolojik yaşa en yakın sonuç Nolla'nın yönteminde geldi. Sonuç: Güney Türk popülasyonunda yapılan önceki çalışmaların aksine, Demirjian yönteminin uyumsuz sonuçlar verdiği bulundu. Bu çalışmada, Nolla yönteminin bu popülasyon için diş yaşını belirlemede daha güvenilir olduğu gösterildi. Ayrıca, Nolla yöntemlerine göre tahmin edilen kemik yaşı ve diş yaşı birbirine oldukça benzerdi.

Keywords

• Diş yaşı
• Kemik yaşı
• Kronolojik yaş Nolla yöntemi
• Demirjian yöntemi

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