Predicting Agenesis of the Mandibular Second Premolar from Adjacent Teeth

Sharma, Geetanjali; Johal, Ama; Liversidge, Helen M.

doi:10.1371/journal.pone.0144180

Cited by 8 publications

(5 citation statements)

References 15 publications

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“…It is explained by the fact that bone formation rate is high during the mandibular alveolar process. [ 32 ] In agreement with our study, Kavitha et al [ 33 ] suggested that MCW is significantly associated with age and could be considered as a valuable parameter for evaluating the bone strength and osteoporosis regarding postmenopausal women in their study on Korean population. Moreover, Roberts et al[ 34 ] reported that MCW starts to decrease in women and men at ages 42.5 and 36 years, respectively.…”

Section: Discussionsupporting

confidence: 92%

Dental Panoramic Radiographic Indices as a Predictor of Osteoporosis in Postmenopausal Saudi Women

et al. 2018

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BackgroundMany oral presentations of osteoporosis-a bone metabolic disease-were recorded. Thus, we aimed to assess panoramic radiomorphometric indices with bone mineral density (BMD) values among Saudi postmenopausal women and its importance in the prediction of osteoporosis.MethodsA total of 431 Saudi women were enrolled in this study. Panoramic radiographs were obtained at the time of BMD measurement. Subjects were fatherly classified into; normal BMD, osteopenia, and osteoporosis groups. Serum follicle-stimulating hormone, luteinizing hormone (LH), estradiol (E2), 25-hydroxy-vitamin D (25[OH]D) and intact-parathyroid hormone were measured. Moreover, serum creatinine, calcium, and phosphate, together with serum osteocalcin (s-OC), procollagen type I N-terminal propeptide (s-PINP) and cross-linked C-terminal telopeptide of type 1 collagen (s-CTX) were measured. Receiver-operator curve (ROC) curve analysis for use of mandibular cortical width (MCW), panoramic mandibular index (PMI), and maxillary-mandibular ratio (M/M ratio) to differentiate women with osteoporosis or osteopenia from normal subjects was calculated. Cut off values of 4.6 at T score <−1 and 4.1 at T score ≤−2.5 were used.ResultsBody mass index is significantly low in the osteoporotic group. There is no significant difference in serum levels of LH, E2, calcium, phosphate, and 25(OH)D between the studied groups. Moreover, s-OC, C-terminal propeptide of procollagen type I, s-PINP, s-CTX, and urinary-CTX are significantly higher in osteoporosis than normal and osteopenia groups. ROC curve analysis revealed that MCW and PMI showed significant data while M/M ratio is non-significant.ConclusionsIt could be concluded that MCW as an important panoramic radiographic parameter can be used for prediction and diagnosis of osteoporosis in postmenopausal Saudi women with low BMD.

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Section: Discussionsupporting

confidence: 92%

Dental Panoramic Radiographic Indices as a Predictor of Osteoporosis in Postmenopausal Saudi Women

et al. 2018

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“…Unfortunately, very late development of the mandibular second premolar has been reported in a few cases. To avoid a false-positive diagnosis of agenesis of this tooth, the method proposed by Sharma et al was used [ 26 ]. They suggest that the second premolar in the mandible is highly unlikely to develop if the adjacent first premolar is beyond stage ‘crown complete’ and the first molar is beyond stage ‘root one half’.…”

Section: Discussionmentioning

confidence: 99%

Dental development in patients with agenesis

et al. 2016

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AimRecent research concerning tooth development and dental agenesis suggests that specific genes are associated with agenesis, and that these genetic factors could also cause delayed dental development of the remaining teeth. The objective of this study was to evaluate whether dental development of patients with agenesis is delayed, compared to a control group.Subjects and methodPanoramic radiographs of 1145 patients with dental agenesis were collected (452 males, 693 females) aged 6.2 to 24.8 years. The control group included 2032 panoramic radiographs (977 males, 1055 females) aged 6.0 to 24.4 years. A total of 3177 orthopantomograms were staged according to Demirjian. All left permanent teeth present in the mandible (except third molars) were considered. In order to evaluate the difference between patients with and without agenesis, a developmental score (DS) was calculated. The association between the DS and the number of agenetic teeth was evaluated with a Spearman correlation.ResultsBased on the DS, patients with agenesis have a delayed development compared to patients in the control group (p < 0.0001). Within the agenesis group, there is a weak relation between the number of agenetic teeth and the DS: the higher the number of teeth with agenesis, the lower the DS (p < 0.0001 and p = 0.06 for females and males, respectively).ConclusionThe obtained results can be an important factor for treatment planning in patients with dental agenesis. Moreover, the presence of agenesis needs to be taken into account when using age estimation methods based on permanent tooth development.

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“…Dental anomalies and lesions of the gnathic bones in children can alter tooth eruption, lead to abnormal occlusion and, in some cases, the child's aesthetics and social life may be affected in the future. If early detected, these changes can be surgically or orthodontically treated, especially with interceptive orthodontics, thus reducing functional, psychosocial and financial problems [10]. In addition, panoramic radiography can be used as an initial complementary exam to check whether the chronology of tooth eruption is in line with the expected for the child's age [11].…”

Section: Introductionmentioning

confidence: 99%

Prevalence of dental anomalies and bone alterations in children’s panoramic radiographies

Reis

Fraga

de-Azevedo-Vaz

et al. 2020

RGO, Rev. Gaúch. Odontol.

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Objective To verify the prevalence of dental anomalies in terms of number, position and shape, and the presence of bone alterations, through analysis of panoramic radiographs. Methods This study evaluated dental anomalies and bone alterations in children aged 6 to 12 years-old, detected on panoramic radiographies recorded in the radiographic database of the Federal University of Espírito Santo between 2012 and 2016. Clinical and demographic information were registered. Dental records were retrieved to obtain the medical history involving syndromes or other diseases that may interfere with the anomalies and alterations. Chi-square and exact Fischer’s statistical tests were performed. Results There were alterations in 83 out of 301 panoramic radiographs analyzed. There were 169 anomalies or alterations (mean of 2,04±1,38 anomalies/patient), involving 201 teeth. The most prevalent anomaly was tooth impaction (26.63%), which affected the canines more frequently, followed by hypodontia (24.26%), more often found in the second premolar, and both affected mostly females. Hyperdontia and radiolucent lesions showed the same prevalence (18.93%), the most affected teeth were those of the anterosuperior region and the first mandibular molars, respectively. The least prevalent anomalies were dilaceration (7.69%), taurodontism (2.37%) and radiopaque lesions (1.18%). Bone alterations were significantly more found in mandible and in the posterior region, which confirms the prevalence in the lower molars. Conclusion Although there was no statistically significant difference regarding sex, there was a high prevalence of anomalies and alterations in our study population, which indicates the importance of its diagnosis by means of a panoramic x-ray examination.

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Predicting Agenesis of the Mandibular Second Premolar from Adjacent Teeth

Cited by 8 publications

References 15 publications

Dental Panoramic Radiographic Indices as a Predictor of Osteoporosis in Postmenopausal Saudi Women

Dental Panoramic Radiographic Indices as a Predictor of Osteoporosis in Postmenopausal Saudi Women

Dental development in patients with agenesis

Prevalence of dental anomalies and bone alterations in children’s panoramic radiographies

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