Bir Grup Türk Populasyonunda Görülen Meziodenslerin Sıklığı, Özellikleri Ve Meydan Getirdikleri Komplikasyonlar

Objectives: the purpose of the study was to analyze the frequency, characteristics and associated complications of mesiodens in a group of patients in Turkey. Materials and Methods: The present study included 3782 patients (1590 male, 2192 female), who attended the Department of Maxillofacial Radiology, Faculty of Dentistry, Erciyes University for their dental problems. Panoramic radiographs routinely obtained during dental examinations served as the study basis for detection of the prevalence of mesiodens. In the case of mesiodens detection additional occlusal radiographs were obtained from the patients. In addition to age and gender, descriptive characteristics of meziodens, including number, shape, position, complication caused by mesiodens were recorded. Results: The prevalence of mesiodens in the present study was 2.7% (3.9% male, 1.8% female). The sex ratio was 2.17:1, favoring boys, the ratio was statistically significant (p<0.001).The majority of the mesiodens (50%) were conical in shape. A majority of the mesiodens (62.1%) were vertically aligned. Inverted and horizontally positions were observed in 20.2% and 16.1% of the cases. 17 patients had two, and two patients had more than two mesiodens. Most of the mesiodens (58.1%) were associated with complications and only 41.9% were asymptomatic. Conclusions: The prevalence of mesiodens was found to be high comparable to similar studies in the literature. The majority of the mesiodens were impacted and thus, in case of retention or delayed eruption, dentists should bear in mind that mesiodens may be the cause and early detection and timely surgical intervention should be kept in mind to avoid unwanted complications. Keywords: Supernumerary teeth, prevalence, panoramic radiographs, mesiodens.  ÖZET Amaç: Bu çalışmanın amacı bir grup Türk populasyonunda görülen meziodenslerin sıklığı, özellikleri ve meziodens dişlerle ilişkili komplikasyonların araştırılmasıdır. Gereç ve Yöntem: Bu çalışmada çeşitli dental problemleri nedeniyle Erciyes Üniversitesi, Dişhekimliği Fakültesi, Ağız Diş ve Çene Radyolojisi Anabilim Dalına başvuran, 3782 hastanın (1590 erkek, 2192 kadın) rutin dental muayene nedeniyle alınan panoromik radyografları ve klinik verileri değerlendirilmiştir. Radyograflarında meziodens saptanan hastalardan dişlerin lokalizasyonu ve meydana getirdikleri komplikasyonların değerlendirilmesi için okluzal radyografiler alınmıştır. Meziodens saptanan hastaların yaşları ve cinsiyetleri yanı sıra, dişlerin sayısı, şekli, pozisyonları ve meydana getirdikleri komplikasyonlar kaydedilmiştir. Bulgular: Meziodens görülme sıklığı cinsiyetler arası istatistiksel olarak anlamlı bulunmuştur (erkek/kadın oranı 2.17:1 olarak bulunmuştur p<0.001). Meziodenslerin çoğunluğunun konik şekilli(%50) ve vertikal pozisyonda olduğu (% 62,1) olduğu saptanmıştır. Dişlerin %20,2 sinin inverted ve % 16,1 sının horizontal pozisyonda olduğu görülmüştür. 17 hastada iki, iki hastada ikiden çok meziodens görülmüştür. Meziodenslerin çoğu (%58,1) komplikasyona yol açarken % 41,9’u komplikasyona yol açmamaktadır. Sonuç: Çalışmamızda meziodens prevelansı literatürdeki diğer çalışmalarla uyumlu bulunmuştur. Meziodenslerin büyük bir çoğunluğu gömülü oldukları için dişhekimleri intraoral muayene sırasında diş sürmesinde gecikme veya retansiyonla karşılaştıklarında meziodensleri de hatırlamalıdırlar. Erken tanı ile gecikme olmadan yapılan cerrahi tedaviler ile istenmeyen komplikasyonlar önlenebilmektedir

Evaluation of the nasopalatine canal and variations with cone-beam computed tomography

Although nasopalatine canal (NPC) is one of the most important anatomical structures in premaxillary region, few documents are available with regard to anatomic variations, size, and morphology of NPC in the literature. In recent years, the need for radiological identification of anatomical structures has grown with increased dental implant applications in anterior maxillary region with higher esthetic expectations. This study aimed at investigating the NPC's shape and anatomical variations by cone-beam computed tomography (CBCT) in the Turkish society, in a particular region

Bilateral anterior Stafne bone defect mimicking radicular cyst: report of a rare case with a review of the literature

Stafne bone defects (SBDs) are asymptomatic radiolucent lingual/buccal bone lesions of the lower jaw that are frequently caused by soft tissue inclusion. SBDs located on the lingual anterior mandibular body (ASBDs) are rare variants. Sublingual salivary glands are thought to be responsible for ASBDs. However, other structures, such as lymphoid or vascular tissues, might be associated with ASBDs. ASBDs may be confused with other odontogenic or non-odontogenic pathologies because of their location and lower occurrence rate. To date, only one case involving the bilateral anterior mandibular area has been reported in the literature, including both the clinical case and archaeological specimens. The primary aim of our study was to describe a new case of bilateral ASBD in the anterior mandible that was mimicking a radicular cyst. The bilateral ASBD was diagnosed with the help of a three-dimensional cone-beam computed tomography scan, and it presented radiographically as a periapical pathologic defect. An additional aim was to review previously reported cases related to ASBDs

Cone-beam computed tomography analysis of the shape, height, and location of the mandibular lingula

The precise anatomic location of the lingula is clinically significant because it is subject to injury during a variety of oral and maxillofacial surgical procedures. This is the first study to identify and classify the different morphological shapes of the mandibular lingula using cone-beam computed tomography

Comparison between panoramic radiography and cone-beam computed tomography findings for assessment of the relationship between impacted mandibular third molars and the mandibular canal

The aim of this study was to assess the relationship between the mandibular canal and impacted mandibular third molars using cone-beam computed tomography (CBCT) and to compare the CBCT findings with panoramic radiographic signs

Detection of incidental carotid artery calcifications during dental examinations: Panoramic radiography as an important aid in dentistry

Objective. This study aimed to determine the diagnostic reliability of panoramic radiographs (PRs) in the detection of carotid artery calcifications (CACs) during routine dental examination by comparing them with color Doppler ultrasound (CDUS) examination as the criterion standard. The correlations between CAC formation and systemic diseases, body mass index, smoking, and age were also examined

Evaluation of location and dimensions of mandibular lingual foramina using cone-beam computed tomography

The aim of this study was to assess the regional frequency and anatomical properties of mandibular lingual foramina (MLF) and their bony canals with cone-beam computed tomography (CBCT)

Assessment of the Visibility and Characteristics of the Mandibular Incisive Canal: Cone Beam Computed Tomography Versus Panoramic Radiography

Purpose: The aim of this study was to assess and compare the visibility, diameter, and course of the mandibular incisive canal (MIC) using cone beam computed tomography (CBCT) and panoramic radiography. Materials and Methods: CBCT images and panoramic radiographs from 243 patients were used in this. study. Standard exposure and patient positioning protocols were used for all the patients. Both types of images were assessed by two dentomaxillofacial radiologists. The diameter and the endpoint level of the MID were measured using the CBCT images. Statistical analysis was performed using t tests in statistical software. Results: Of the 486 hemimandibles examined, the MIC was visible in 249 (51.2%) radiographs and 459 (94.4%) CBCT images. The mean diameters of the MICs were 1.91 +/- 0.45 mm on the right side and 1.94 +/- 0.41 mm on the left side. The MICs on both the right and left sides of the mandible showed statistically significant differences in diameter in male versus female patients. The visibility of the MIC on the panoramic radiographs according to the increase in the diameter was not statistically significant for both sides. Twenty MICs reached to the midline of the mandible, and the majority of the MICs (n = 114) terminated between the canine and the first premolar. Conclusion: The visibility of the MIC in CBCT is much better than that observed in conventional panoramic radiography. Even some large MICs could not be observed in panoramic radiographs. Detection of the MIC using CBCT may be crucial for surgical procedures involving the inter foraminal region

Condylar and ramal vertical asymmetry in unilateral and bilateral posterior crossbite patients and a normal occlusion sample

Introduction: Our objective was to evaluate the condylar, ramal, and condylar-plus-ramal mandibular vertical asymmetry in a group of adolescent subjects with normal occlusion and unilateral and bilateral posterior crossbite malocclusions. Methods: Mandibular asymmetry index measurements (condylar, ramal, and condylar-plus-ramal) were made on the panoramic radiographs of 126 subjects (51 boys, 75 girls). The study groups consisted of 46 unilateral (19 boys, 27 girls; mean age, 13.06 +/- 3.52 years) and 40 bilateral (16 boys, 24 girls; mean age, 12.7 +/- 3.22 years) posterior crossbite patients and a group of 40 subjects (16 boys, 24 girls; mean age, 14.43 +/- 3.05 years) with normal occlusion. One-way analysis of variance (ANOVA) was used to determine possible statistically significant differences between the groups for condylar, ramal, and condylar-plus-ramal asymmetry index measurements at the 95% confidence interval. Results: No group showed statistically significant sex- or side-specific differences for posterior vertical height measurements (P > 0.05). Asymmetry indexes (condylar, ramal, and condylar-plus-ramal) were similar, and no statistically significant differences were found among the unilateral and bilateral posterior crossbite groups and the normal occlusion sample. Conclusions: No statistically significant sex-or side-specific mandibular asymmetry was found among the 3 groups. Condylar asymmetry index values were significantly high compared with the 3% threshold value in each of the 3 groups, but comparisons between groups were not statistically significant. (Am J Orthod Dentofacial Orthop 2009; 136: 37-43