scholarly journals Relationship between dental calcification and skeletal maturation in a Peruvian sample

2017 ◽  
Vol 22 (3) ◽  
pp. 89-96 ◽  
Author(s):  
Rocío M. Lecca-Morales ◽  
Marcos J. Carruitero
Keyword(s):  
Cervical Vertebrae ◽  
Skeletal Maturation ◽  
Growth Spurt ◽  
Mandibular Growth ◽  
Exact Test ◽  
Second Molar ◽  
Pubertal Growth ◽  
Mandibular Molar ◽  
Maturation Stages ◽  
Mandibular Second Molar

ABSTRACT Objective: the objective of the study was to determine the relationship between dental calcification stages and skeletal maturation in a Peruvian sample. Methods: panoramic, cephalometric and carpal radiographs of 78 patients (34 girls and 44 boys) between 7 and 17 years old (9.90 ± 2.5 years) were evaluated. Stages of tooth calcification of the mandibular canine, first premolar, second premolar, and second molar and the skeletal maturation with a hand-wrist and a cervical vertebrae method were assessed. The relationships between the stages were assessed using Spearman’s correlation coefficient. Additionally, the associations of mandibular and pubertal growth peak stages with tooth calcification were evaluated by Fisher’s exact test. Results: all teeth showed positive and statistically significant correlations, the highest correlation was between the mandibular second molar calcification stages with hand-wrist maturation stages (r = 0.758, p < 0.001) and with vertebrae cervical maturation stages (r = 0.605, p < 0.001). The pubertal growth spurt was found in the G stage of calcification of the second mandibular molar, and the mandibular growth peak was found in the F stage of calcification of the second molar. Conclusion: there was a positive relationship between dental calcification stages and skeletal maturation stages by hand-wrist and cervical vertebrae methods in the sample studied. Dental calcification stages of the second mandibular molar showed the highest positive correlation with the hand-wrist and cervical vertebrae stages.

Assessment of Skeletal Maturation using Mandibular Second Molar Maturation Stages

2014 ◽  
Vol 39 (1) ◽  
pp. 79-84 ◽  
Author(s):  
S Goyal ◽  
S Goyal ◽  
N Gugnani
Keyword(s):  
Skeletal Maturity ◽  
Cervical Vertebrae ◽  
Skeletal Maturation ◽  
Growth Spurt ◽  
Pubertal Growth Spurt ◽  
Second Molar ◽  
Pubertal Growth ◽  
Lateral Cephalograms ◽  
Mandibular Second Molar ◽  
Pre Treatment

Objectives: To investigate the relationship between cervical vertebrae maturation and mandibular second molar calcification stages.Study design: The study was designed as a retrospective, descriptive and crosssectional research project. Pre-treatment lateral cephalograms and panoramic radiographs of 99 males and 110 females in the age range of 7 to 18 years 7 months were evaluated with Demirjian Index (DI) and cervical vertebrae maturation indicators (CVMI) of Hassel and Farman. A null hypothesis was proposed that there is no relation between CVMI and DI. Results: A highly significant association (Pearson's contingency coefficient 0.713 for males and 0.863 for females) was found between DI and CVMI. In males, the DI stage E corresponded to stage 2 of CVMI (pre–peak of pubertal growth spurt) and DI stages F and G corresponded to stages 3 and 4 of CVMI (peak of pubertal growth spurt). DI stage H was associated with stages 5 and 6 of CVMI (end of pubertal growth spurt). In females, the DI stages C, D corresponded to CVMI stages 1, 2; DI stages E, F with CVMI stages 3, 4; DI stages G, H with CVMI stages 5, 6. Conclusion: Mandibular second molar calcification stages can be used as indicators for assessment of skeletal maturity.

scholarly journals Anatomical evaluation of the cervical vertebrae of Wistar rats by means of digital radiographs and its correlation with the maturation stages of human cervical vertebrae

2013 ◽  
Vol 18 (4) ◽  
pp. 82-88
Author(s):  
Roberto Hiroshi Matsui ◽  
Julio Cezar de Melo Castilho ◽  
Luiz César de Moraes ◽  
Mônica Fernandes Gomes ◽  
Kurt Faltin Júnior ◽  
...  
Keyword(s):  
Cross Sections ◽  
Wistar Rats ◽  
Cervical Vertebrae ◽  
Pearson Correlation ◽  
Bone Age ◽  
Skeletal Maturation ◽  
Growth Spurt ◽  
Digital Radiographs ◽  
Maturation Stages ◽  
Development Assessment

INTRODUCTION: Biological age is an important parameter for growth and development assessment. It can be evaluated through the observation of radiographic changes in skeletal maturation of cervical vertebrae. OBJECTIVE: This study aims to: a) verify if there is correlation between growth curve and the stages of bone age of animals used in laboratories, by evaluating radiographs of the cervical vertebrae; b) correlate these stages with their correspondents in humans. METHODS: 35 Wistar rats were evaluated for a period of 160 days, starting at day 22nd (weaning), with cross sections for periodic weighing, length measurement and digital radiography. Radiographs of the cervical vertebrae (C2 and C3) were measured by means of a computer program (Radio IMP). Data were submitted to statistical analysis (ANOVA) and Pearson correlation. RESULTS: Growth spurt was characterized by fast increasing in weight and length. Through ANOVA, differences were observed in the cervical measurements between days 22, 97, 127, 157, 187 and 217 (p <0.001). A high correlation was found between increasing in body length and weight, as well as in cervical vertebrae height (r = 0.86). Increments in concavities of vertebrae were also observed, similar to humans. CONCLUSIONS: There is correlation between body growth and maturation of cervical vertebrae in rats. Despite the continuous development of concavities, it was not possible to clearly identify the 5/6 stages as in studies of cervical vertebrae maturation in humans.

scholarly journals Diagnostic reliability of mandibular second molar maturation in the identification of the mandibular growth peak: A longitudinal study

2017 ◽  
Vol 87 (5) ◽  
pp. 665-671 ◽  
Author(s):  
Giuseppe Perinetti ◽  
Riccardo Sossi ◽  
Jasmina Primozic ◽  
Gaetano Ierardo ◽  
Luca Contardo
Keyword(s):  
Likelihood Ratio ◽  
Longitudinal Design ◽  
Positive Likelihood Ratio ◽  
Diagnostic Reliability ◽  
Dental Maturation ◽  
Mandibular Growth ◽  
Second Molar ◽  
Lateral Cephalograms ◽  
Maturation Stages ◽  
Mandibular Second Molar

ABSTRACT Objective: To investigate the diagnostic reliability of mandibular second molar maturation in assessing the mandibular growth peak using a longitudinal design. Materials and Methods: From the files of the Burlington and Oregon growth studies, 40 subjects (20 from each collection, 20 males and 20 females) with at least seven annual lateral cephalograms taken from 9 to 16 years were included. Mandibular second molar maturation was assessed according to Demirjian et al., and mandibular growth was defined as annual increments of Co-Gn distance. A full diagnostic reliability analysis (including positive likelihood ratio) was performed to establish the diagnostic reliability of dental stages E, F, and (pooled) GH in identifying the imminent mandibular growth peak. Results: None of the dental maturation stages reliably identified the mandibular growth peak with greatest overall mean accuracy and positive likelihood ratio of 0.77 (stage F) and 2.7 (stage E), respectively. Conclusions: Use of the mandibular second molar maturation is not recommended for planning treatment requiring identification of the mandibular growth peak.

scholarly journals Skeletal maturation in individuals with Down's syndrome: Comparison between PGS curve, cervical vertebrae and bones of the hand and wrist

2014 ◽  
Vol 19 (4) ◽  
pp. 58-65 ◽  
Author(s):  
Glauber Carinhena ◽  
Danilo Furquim Siqueira ◽  
Eduardo Kazuo Sannomiya
Keyword(s):  
Cervical Vertebrae ◽  
Statistical Significance ◽  
Down's Syndrome ◽  
Down’S Syndrome ◽  
Skeletal Maturation ◽  
Growth Spurt ◽  
Pubertal Growth Spurt ◽  
Pubertal Growth ◽  
Ossification Centers ◽  
Level Of Agreement

INTRODUCTION: This study was conducted with the aim of adapting the methods developed by Martins and Sakima to assess skeletal maturation by cervical vertebrae in the pubertal growth spurt (PGS) curve. It also aimed to test the reliability and agreement between those methods and the method of hand and wrist radiograph when compared two by two and all together. METHODS: The sample comprised 72 radiographs, with 36 lateral radiographs of the head and 36 hand-wrist radiographs of 36 subjects with Down's syndrome (DS), 13 female and 23 male, aged between 8 years and 6 months and 18 years and 7 months, with an average age of 13 years and 10 months. RESULTS AND CONCLUSIONS: Results revealed that adapting the methods developed by Martins and Sakima to assess skeletal maturation by cervical vertebrae in the curve of PGS is practical and useful in determining the stage of growth and development of individuals. The stages of maturation evaluated by cervical vertebrae and ossification centers observed in radiographs of the hand and wrist were considered reliable, with excellent level of agreement between the methods by Hassel and Farman as well as Baccetti, Franchi and McNamara Jr and Martins and Sakima. Additionally, results revealed an agreement that ranged between reasonable to good for the three methods used to assess the skeletal maturation, showing statistical significance.

scholarly journals SKELETAL MATURATION EVALUATION USING MANDIBULAR SECOND MOLAR CALCIFICATION STAGES

2021 ◽  
Vol 71 (3) ◽  
pp. 980-83
Author(s):  
Fakhira Nizam ◽  
Nasrullah Mengal ◽  
Mirza Tareen ◽  
Sumbal Hayat
Keyword(s):  
Skeletal Maturity ◽  
Cervical Vertebrae ◽  
Statistical Significance ◽  
Skeletal Maturation ◽  
Prior History ◽  
Second Molar ◽  
Stage 4 ◽  
History Of ◽  
Mandibular Second Molar ◽  
Maturation Index

Objective: To examine the relationship between skeletal maturity and mandibular second molar calcification stages and assessing mandibular second molar as a diagnostic tool for skeletal maturity evaluation. Study Design: Cross sectional study. Place and Duration of Study: Orthodontic department, Sandeman Provincial Hospital, Quetta, from Jan to Jun 2019. Methodology: The sample size of the study 240 comprised of equal number of males and females. Inclusion criteria was defined to include the patients (male and female) with the age from 9-16 years; on the same time, patients without facial asymmetry and without prior history of facial or neck trauma/injury or surgery were considered for the present study. Exclusion criteria was defined to exclude those patients from the study hoe had the history of bone disease and major illness in past; known cases of muscular dystrophy; any congenital malformation of cervical vertebrae and tooth caries; Low quality x-ray with poor contrast. Results: The study revealed association between Demirjian Index and Cervical Vertebrae Maturation Index stages (0.875) with the statistical significance. Demirjian Index Stage H indicated the greater percentage distribution at stage 4 and 6 of Cervical Vertebrae Maturation for males. Similarly, in females, demirjian index stages G and H showed the greater percentage at stage 4 and 6 of cervical vertebrae maturation index respectively. Conclusion: Analysis indicated that cervical vertebrae maturation index and Demirjian Index (DI) occurred earlier in femalesthan males.

scholarly journals Uprighting Impacted Mandibular Second Molar Using a Skeletal Anchorage: A Case Report

2020 ◽  
Vol 8 (4) ◽  
pp. 129
Author(s):  
Federica Altieri ◽  
Rosanna Guarnieri ◽  
Martina Mezio ◽  
Gabriella Padalino ◽  
Angela Cipollone ◽  
...  
Keyword(s):  
Case Report ◽  
Treatment Time ◽  
Skeletal Anchorage ◽  
Impacted Tooth ◽  
Short Treatment ◽  
Second Molar ◽  
Advantages And Disadvantages ◽  
Mandibular Molar ◽  
Mandibular Second Molar ◽  
The Impact

The aim of this case report is to present an innovative combined orthodontic-surgical technique to disimpact mandibular second molar (MM2) using an orthodontic miniscrew and an elastic chain. The impact on the Oral health-related quality of life (OHRQoL) was also evaluated. Using the present techinique, it is possible to expose the impacted tooth, insert a self-drilling miniscrew in the retromolar area, and remove the bud of third mandibular molar. At the same time the orthodontic force is applied with the use of an elastomeric chain that connects the head of miniscrew and vestibular and oral buttons bonded on MM2. A close traction is performed for the whole treatment time without the reactivation of the elastic force. The use of skeletal anchorage allowed the disimpaction of impacted MM2 in a short treatment time (about three months) avoiding the typical biomechanical side effects of traditional orthodontic appliance and increasing the effectiveness of the treatment. Further studies are necessary to evaluate the real advantages and disadvantages of this combined orthodontic-surgical approach.

scholarly journals Radix Entomolaris in the Mandibular Molar Teeth of an Iranian Population

2017 ◽  
Vol 2017 ◽  
pp. 1-4 ◽  
Author(s):  
Maryam Kuzekanani ◽  
Laurence J. Walsh ◽  
Jahangir Haghani ◽  
Ali Zeynali Kermani
Keyword(s):  
Root Length ◽  
Type I ◽  
Exact Test ◽  
Second Molar ◽  
Type Iii ◽  
Dental Clinics ◽  
Mandibular Molar ◽  
Molar Teeth ◽  
Distolingual Root ◽  
The Difference

Purpose. Supernumerary roots in permanent mandibular molar teeth make endodontic treatment more complicated. The aim of this study was to determine the prevalence of Radix Entomolaris (RE) in permanent mandibular first and second molars in the population of Kerman, in the southeast of Iran. Materials and Methods. From a collection of 500 mandibular first and second molar teeth extracted over 2015-2016 at dental clinics in Kerman, teeth were scored for an additional distolingual root, and the average root length and root morphology of this extra root were determined using the De Moor classification scheme. Results. In this population, RE occurred in 6% of mandibular first molars (4% with a straight apex (Type I) and 2% with buccal apical curvature (Type III)). In all cases, RE was the shortest root, with an average root length of 18.37 mm. RE occurred in only 0.8% of mandibular second molars, with an average root length of 18.0 mm. All mandibular second molars with RE were of Type III. Fisher’s exact test showed that the difference in frequency between first and second molars was statistically significant (two-sided P=0.002). Conclusion. Radix Entomolaris occurs more frequently in mandibular first molars than in mandibular second molars in this sample of 500 mandibular molars. The reported rate of 6% in first molars is expected to be higher than reported rates in European or Caucasian populations where the prevalence is typically less than 2%.

scholarly journals Predicting the mandibular growth spurt:

2021 ◽  
Vol 91 (3) ◽  
pp. 307-312
Author(s):  
Lorenzo Franchi ◽  
Michele Nieri ◽  
Irene Lomonaco ◽  
James A. McNamara ◽  
Veronica Giuntini
Keyword(s):  
Child Growth ◽  
Outcome Variable ◽  
Growth Spurt ◽  
Chronological Age ◽  
Growth Study ◽  
Mandibular Growth ◽  
Pubertal Growth ◽  
Lateral Cephalograms ◽  
The Mean ◽  
Age And Sex

ABSTRACT Objectives To develop a prediction model that combined information derived from chronological age, sex, and the cervical vertebral maturation (CVM) method to predict the pubertal spurt in mandibular growth. Materials and Methods A total of 50 subjects (29 females, 21 males) were selected from the American Association of Orthodontists Foundation Craniofacial Growth Legacy Collection, the University of Michigan Growth Study, and the Denver Child Growth study. A total of 456 lateral cephalograms were analyzed, and a multilevel logistic model was applied. The outcome variable was the presence or absence of the mandibular pubertal growth peak. The predictive variables were chronological age up to the third order, sex, presence or absence of CS 3 interactions between age and sex, age and CS 3, sex and CS 3. Results The mean age ± standard deviation (SD) at the first cephalogram was 8.2 ± 0.5 years, whereas the mean age at the last cephalogram was 16.5 ± 1.1 years. The mean interval ± SD between two consecutive cephalograms was 1.0 ± 0.1 years. The mean age ± SD at the lateral cephalogram obtained immediately before the mandibular pubertal growth peak was 12.1 ± 1.1 years for females and 13.2 ± 0.8 years for males. The greatest increase in mandibular length occurred after CS 3 in 78% of the subjects. The presence of CS 3, age, second-order age, sex, and the interaction between age and sex were all statistically significant predictors of the mandibular pubertal growth spurt. Conclusions CS 3, chronological age, and sex can be used jointly to predict the pubertal peak in mandibular growth.

Sign in / Sign up

Export Citation Format

Share Document