Numerical aberrations in the permanent teeth of grade school children in Jerusalem

Rosenzweig, Kurt A.; Garbarski, Dalia

doi:10.1002/ajpa.1330230315

Cited by 53 publications

(39 citation statements)

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“…Studies in Europe, Australia, and North America reported a higher incidence of developmental absence of permanent teeth in females than in males [8,9,12,29], which is consistent with the present findings of a malefemale ratio of 1:1.4. Consistent with other studies, this study indicates a higher frequency of CMT in the maxilla than in the mandible [13,14,21,26,30,31].…”

Section: Discussionsupporting

confidence: 92%

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Radiographic study of tooth agenesis in the Turkish population

et al. 2010

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Objectives This retrospective study used panoramic radiographs of a large number of Turkish patients to determine the prevalence of tooth agenesis. Methods Data from a total of 100,577 patients were collected from six different regions of Turkey. Five experienced dentists independently examined the files, which included panoramic radiographs and demographic data (age and gender). Tooth agenesis was evaluated for hypodontia and oligodontia. Third molars were excluded from the study. Proportions were compared by using a z test, and to detect relationships between categorical variables a chi-square test was performed to determine statistical significance at a level of P \ 0.05. Results Among the 100,577 patients, in total 3,147 teeth were found to be developmentally absent. The prevalence of tooth agenesis and oligodontia in this Turkish population was 3.12 and 0.07%, respectively. Females were more frequently affected than males, and tooth agenesis was found in the maxilla more often than in the mandible. Bilateral agenesis was more common than unilateral. The study found nearly equivalent numbers on the right and left sides, so the ratios of incidence in the two sides were almost identical. Conclusions Within the limitations of the study, the present data involve an extensive sample population collected from Turkey's different regions; thus, the findings of this study reflect actual information regarding tooth agenesis throughout the Turkish population.

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Section: Discussionsupporting

confidence: 92%

“…The overall prevalence of hypodontia ranges from 0.3 to 11.3% in different regions and populations [7][8][9][10][11][12][13][14][15][16][17][18]. Oligodontia is very rare [19].…”

Section: Introductionmentioning

confidence: 99%

Radiographic study of tooth agenesis in the Turkish population

et al. 2010

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“…The wide range of frequency rates of hypodontia can be attributed to differences in the methods of sampling and examination and the distribution of age, sex, and racial origin of the subjects. Many studies have demonstrated that there was no consistent finding as to which jaw has more missing teeth (4,7,9,12,(17)(18)(19). However, Chung et al (8) found that hypodontia was significantly more in the mandible.…”

Section: Discussionmentioning

confidence: 99%

Frequency and characteristics of tooth agenesis among an orthodontic patient population

Çelikoğlu

Kazanci²,

Miloğlu³

et al. 2010

Med Oral

108

112

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Purpose: The objectives of this study were to investigate the prevalence and characteristics of tooth agenesis and the associated skeletal morphology and arch widths in a group of Turkish patients seeking orthodontic treatment. Material and Methods: We designed a retrospective study composed of pre-and post-treatment panoramic radiographs and lateral cephalometric films of 3,341 patients (2,040 females and 1,301 males). Tooth agenesis was evaluated for hypodontia and oligodontia -excluding the third molars-from the orthopantomograms. The significance test for the differences in the skeletal morphology between hypodontia and non-hypodontia patients was performed using the Pearson chi-square and Student t-test. Results: The prevalence of tooth agenesis was 4.6 percent for the Turkish orthodontic patient population. Tooth agenesis was found more frequently in females than in males, although this difference was not statistically significant (p>0.05). The most commonly missing teeth were the maxillary lateral incisors, followed by the mandibular second premolars and mandibular central incisors. Intercanine and intermolar widths in the maxillary and mandibular arches were significantly reduced in the hypodontia group compared with the control group (p<0.01). Tooth agenesis was statistically and significantly less in patients with skeletal Class II (p<0.01). There was no statistically significant difference in hypodontia patients in the vertical relationship of the jaws (p>0.05). Conclusions: The prevalence of tooth agenesis was found to be 4.6 percent for the Turkish orthodontic patient population (hypodontia 4.3% and oligodontia 0.3%), and was found more frequently in females. Intercanine and intermolar widths were significantly reduced in the hypodontia group for both jaws compared with the control group.

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“…One more theory, well supported in the literature, is the hyperactivity theory, suggesting that the hyperactivity of dental lamina is the reason for supernumerary teeth formation [12]. Genetics are also instrumental for the occurrence of supernumerary teeth, as these anomalies are more common in the family of affected children than in the general population [13]. Few syndromes like Hallermann-Streiff's syndrome, Gardner's syndrome, Cleidocranial dysplasia, cleft lip and palate, oro-facial digital syndromes, etc.…”

Section: Introductionmentioning

confidence: 99%