scholarly journals Radiological age estimation using third molars mineralization in a sample attending orthodontic clinics (A retrospective study)

2020 ◽  
Vol 32 (1) ◽  
pp. 57-64
Author(s):  
Zainab M Kadhom
Keyword(s):  
Age Estimation ◽  
Developmental Stages ◽  
Third Molar ◽  
Practical Method ◽  
Chronological Age ◽  
Third Molars ◽  
Significant Difference ◽  
Mandibular Third Molars ◽  
The Right ◽  
Demirjian Method

Background: The evaluation of the chronological age is a practical method in crime investigation field that assists in identifying individuals to treat them as underage or adult. This study aimed to assess the stages of third molars mineralization in relation to chronological age of Iraqi individuals, determine the gender differences and arches (maxillary/mandibular) differences. Materials and Methods: A total of 300 orthopantomograms of orthodontic patients were collected according to specific criteria and evaluated visually. The developmental stages of maxillary and mandibular third molars were determined according to Demirjian method. The chronological age was recorded according to the particular mineralization stages at which it reached considering genders, sides and jaws. Comparisons were done using paired sample and independent sample t-tests. Results: Results showed that there was no statistically significant difference (P>0.05) between maxillary and mandibular third molars. The maxillary third molars reached earlier than mandibular one in stages F and G. There was no significant difference between the mean ages of males and females at each given developmental stage in the maxillary and mandibular third molars except for the stage D in the maxilla and stages D and E in the mandible. The development of third molar teeth on the right and left sides was similar except for the maxillary arch in males when there was a significant difference in stage C and D and stage E in the mandibular arch. Conclusion: The Demirjian method is an excellent approach for age assessment using Orthopantomogram. All of the differences between the current study and other studies could be because of the difference in the populations who were chosen from different geographical areas. Keywords: Age estimation, Demirjian method, third molar, Orthopantomogram, chronological age.

scholarly journals Influence of First Premolar Extraction on Mandibular Third Molar Angulation

2009 ◽  
Vol 79 (6) ◽  
pp. 1143-1148 ◽  
Author(s):  
Suruchi Jain ◽  
Ashima Valiathan
Keyword(s):  
Third Molar ◽  
Positive Influence ◽  
Reference Plane ◽  
Third Molars ◽  
Premolar Extraction ◽  
Mandibular Third Molar ◽  
Significant Difference ◽  
The Mean ◽  
Mandibular Third Molars ◽  
The Right

Abstract Objective: To compare the angular changes in the developing mandibular third molars in both first premolar extraction and nonextraction cases and to determine whether premolar extraction results in a more mesial movement of the mandibular buccal segment and causes favorable rotational changes in the mandibular third molar tilt, which can enhance later eruption of the third molars. Materials and Methods: Pretreatment (T1) and posttreatment (T2) panoramic radiographs were taken of 25 subjects who had been treated by the extraction of all the first premolars and 25 subjects who had been treated with nonextraction. The horizontal reference plane was used to measure and compare the changes in the angles of the developing mandibular third molars. Results: The mean uprighting of the mandibular third molars seen in the extraction group was 8.2 ± 5.4 degrees on the left side and 6.3 ± 6.5 degrees on the right side following treatment (T2 − T1). For the nonextraction group the mean difference was 1.3 ± 4.3 degrees on the left side and 1.7 ± 5.4 degrees on the right side. There was a statistically significant difference between the groups (P = .012 on the right side and P < .001 on the left side). Conclusions: Premolar extractions had a positive influence on the developing third molar angulations. Nonextraction therapy did not have any adverse effects.

scholarly journals Effects of Extraction and Nonextraction Treatment on Third Molar Angulation

2015 ◽  
Vol 5 (1) ◽  
pp. 17-21
Author(s):  
Ajay Sudhakar Nitturkar ◽  
Sachin Doshi ◽  
Girish Karandikar ◽  
Samay Tahilramani ◽  
Bhavisha Gandhi
Keyword(s):  
Third Molar ◽  
Positive Influence ◽  
Occlusal Plane ◽  
Third Molars ◽  
Premolar Extraction ◽  
The Third ◽  
Significant Difference ◽  
The Mean ◽  
Mandibular Third Molars ◽  
The Right

ABSTRACT Objective To compare the angular changes in the developing third molars in both first premolar extraction and nonextraction cases and to determine if premolar extraction results in greater mesial movement of mandibular buccal segment and also causes favorable rotational changes in the third molar tip, which can improve later eruption of the third molars. Materials and Methods Pretreatment (T1) and post-treatment (T2) panoramic radiographs were obtained 31 subjects were taken who had been treated by extraction of all first premolars and for 21 subjects treated with nonextraction theray. Occlusal plane was used to measure and compare the changes in the angles of the developing maxillary and mandibular third molars. Results The mean uprighting of the third molars seen in the extraction group was 8.7° ± 10.29° and 2.97° ± 11.11° on the right side, and 5.14° ± 9.04° and 2.77° ± 12.10° on the left side following treatment (T2 – T1). For the nonextraction group, the mean difference was – 1.52 ± 6.43 and – 6.430 ± 12.21° on the right side, and – 3.90° ± 7.67° and – 5.7° ± 7.23° on the left side. There was a statistically significant difference between the groups (p < 0.001). Conclusion Premolar extractions had a positive influence on the developing third molar angulations. Nonextraction therapy did not have any adverse effects. How to cite this article Nitturkar AS, Doshi S, Krishnan RV, Karandikar G, Tahilramani S, Gandhi B. Effects of Extraction and Nonextraction Treatment on Third Molar Angulation. J Contemp Dent 2015;5(1):17-21.

Three-dimensional verification of the radiographic visibility of the root pulp used for forensic age estimation in mandibular third molar

2021 ◽  
Author(s):  
Dilara Nil Gunacar ◽  
Seval Bayrak ◽  
Enver Alper Sinanoglu
Keyword(s):  
Age Estimation ◽  
Three Dimensional ◽  
Estimation Method ◽  
Third Molar ◽  
Fair Agreement ◽  
Chronological Age ◽  
Female Group ◽  
Third Molars ◽  
Imaging Methods ◽  
Mandibular Third Molars

Objectives The aim of this study was to assess the reliability of panoramic radiography (OPG) using age estimation method using cone-beam computed tomography (CBCT) verification in the evaluation of radiographic visibility of root pulp (RPV) of mandibular third molars for age estimation. Methods CBCT and OPG images of 429 mandibular third molars from 290 patients were evaluated. RPV of fully mineralized mandibular third molars was evaluated as stages 0, 1, 2, and three for both imaging methods. Descriptive statistics were performed separately for stages by age for both genders. The consistency of these scores with chronological age was evaluated for both imaging methods. The reliability of OPG evaluation was also analyzed with CBCT scores. Results: Spearman’s rho correlation demonstrated a positive correlation between RPV and chronological age for both genders and for OPG and CBCT evaluation. Considering the minimum ages of both imaging methods, all stages were above the age of 18 except for the female group of Stage two and all Stage 0. For the comparison of OPG and CBCT RPV Staging scores, the κ score was found to be 0.312 (p < 0.001), indicating a fair agreement. Conclusion In conclusion, the absence of Stage 3 at age of 18 and under might have a forensic value for RPV age estimation method. Considering the fair agreement in the verification of OPG scores, it is not possible to determine the exact age with the RPV detected in OPG images, the use of CBCT for the RPV evaluation is recommended to available cases

scholarly journals The Frequency of Mandibular Third Molar Impaction in Different Types of Vertical Skeletal Faces

2021 ◽  
Vol 30 (02) ◽  
pp. 118-123
Author(s):  
Sana Viqar ◽  
◽  
Sadia Rizwan ◽  
Syed Shah Faisal ◽  
Syed Sheeraz Hussain
Keyword(s):  
Third Molar ◽  
Third Molars ◽  
Skeletal Malocclusion ◽  
Mandibular Third Molar ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Pre Treatment ◽  
Mandibular Third Molars ◽  
Facial Types ◽  
Third Molar Eruption

OBJECTIVE: To determine the frequency of mandibular third molar impaction in different vertical skeletal facial types. METHODOLOGY: Data was collected using pre-treatment records including orthodontic files, pre-treatment lateral cephalograms and OPGs of 90 orthodontic patients. Patients from both genders were included. The age group of selected patients was 18-30 years. Vertical skeletal malocclusion was measured using facial angle and mandibular plane angle on cephalogram to group the subjects into Mesiofacial, Brachyfacial and Dolichofacial patients. Third molar eruption status was assessed using OPG. RESULTS: Results showed that erupted third molars were mostly found in brachyfacial patients. Among 32 erupted mandibular third molars, 16 belong to brachyfacial, 11 belonged to mesiofacial and 5 belonged to dolichofacial group. Complete impaction of mandibular third molar was most common among dolichofacial patients. Among 29 completely impacted mandibular third molars, 14 belong to dolichofacial, 9 belonged to mesiofacial and 6 belonged to brachyfacial group. No significant difference was found for partially impacted third molars among the three groups of facial types. There was higher prevalence of mandibular third molar impaction in females as compared to males. CONCLUSION: Frequency of third molar impaction was found to be highest in dolichofacial patients and lowest in brachyfacial patients due to forward direction of mandibular growth contributing to greater resorption of the anterior border of ramus and the additional space required for third molar eruption.

scholarly journals Correlation Between the Maturation Stages of Mandibular Third Molars and Chronological Age in Patients Visiting Sardar Begum Dental College, Peshawar

2019 ◽  
Vol 5 (2) ◽  
pp. 3-7
Author(s):  
Muhammad Ilyas ◽  
Asma Khan ◽  
Syed Murad Ali Shah ◽  
Salman Khan ◽  
Junaid Nadeem Malik
Keyword(s):  
Pearson Correlation ◽  
Third Molar ◽  
Cross Sectional Study ◽  
Chronological Age ◽  
P Value ◽  
Third Molars ◽  
Cross Sectional ◽  
Mandibular Third Molar ◽  
Maturation Stages ◽  
Mandibular Third Molars

OBJECTIVES: The objective of this study was to determine the correlation of chronological age with the maturation stages of mandibular third molar. METHODOLOGY: This descriptive, cross-sectional study was conducted at Sardar Begum Dental College, Gandhara University Peshawar on 384 patients from January 2018 to June 2018 and included patients having age 11-26 years with good quality Orthopantomogram showing mandibular third molar tooth germs bilaterally. Data were analyzed using SPSS version 22. p ≤ 0.05 was considered as statistically significant. RESULTS: Females 286 (74.5%) were predominant than males 98 (25.5%) with mean age presentation of 18.12±3.03 years. The most frequent stage of Demirjian’s stages of mandibular third molar was stage F (24.7%). Pearson correlation showed that maturation stages of mandibular third molars were significantly related to the chronological age ( r=0.446, p value=0.00). CONCLUSION: A correlation between maturation stages of mandibular third molars and chronological age existed.

scholarly journals Possibilty of the lower third molar eruption: Radiographic analysis

2006 ◽  
Vol 63 (2) ◽  
pp. 159-162
Author(s):  
Nenad Nedeljkovic ◽  
Zorana Stamenkovic ◽  
Zoran Tatic ◽  
Alek Racic
Keyword(s):  
Third Molar ◽  
Occlusal Plane ◽  
Third Molars ◽  
The Third ◽  
Crown Width ◽  
Significant Difference ◽  
Mutual Relations ◽  
The Right ◽  
B Lines ◽  
Third Molar Eruption

Backgraund/Aim. To assess the possibility of the eruption of the lower third molar on the basis of the measured parameters: retromolar space, mesiodistal crown width of a molar and the third molar angulation. Methods. The investigation included 104 patients both sexes (43 boys, and 61 girls), 16 to 25 years old (meanage, 18 years). It was performed using the orthopanthomographic radiographs analysis of those patients. Each radiograph was covered by tracing paper, and the contoures of the followiny anatomic details were drawn: a) the crown and root contours of third molars, upper and lower central incisors, distal molars in occlusion, anterior edge of ramus mandible, b) lines: 1. the occlusal plane, 2. the line of retromolar space, 3. the mesiodistal crown width of third molar, 4. the axial shaft of the third molar and the distal angle between occlusal plane and the axial shaft of the third molar. The values were measured with an orthodontic caliper: the diameter of retromolar space, diameter of mesiodistal width, the value of distal angle between occlusal plane and axial shaft of molar. Results. A favourable angulation of the lower third molar (more than 60?) was found in, boys (left 27.90%, right 32.55%), girls (left 39.34%, right 37.77%). A favourable relationship between the diameters of mesiodistal width of the third molar and retromolar space was found in, boys, (left 13.59%, right 16.27%), girls, (left 8.19%, right 14.75%). A favorable relationship between the diameters of mesiodistal width of the third molar and the retromolar space and the angulation was found in boys, (left 9.30%, right 11.62%), girls, (left 6.56%, right 9.83%). Conclusion. There was not any statistically significant difference found between the relation of the retromolar value, third molar mesiodistal diameter, or of the third molar angulation to the left and the right side nor of their mutual relations in comparing boys and girls. A favorable prognosis was found in 9.33% of the patients.

scholarly journals Influence of Lidocaine including Buprenorphine for Postoperative Analgesia after the Extraction of Mandibular Third Molars: A Randomized Controlled, Double-Blind, Split-Mouth Study

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Nimrat K. Jawanda ◽  
Anand Shukla ◽  
Anupam Singh ◽  
Kalyana C. Pentapati ◽  
Srikanth Gadicherla
Keyword(s):  
Opioid Receptors ◽  
Postoperative Analgesia ◽  
Third Molar ◽  
Control Group ◽  
Third Molars ◽  
Surgical Extraction ◽  
Significant Difference ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars ◽  
And Control

Background. The presence of opioid receptors around the peripheral nerves offers the possibility of providing postoperative analgesia, thereby encouraging the study of the effect of opioids in combination with local anesthesia (LA). Studies have also reported the efficacy of peripherally administered opioids in achieving adequate analgesia in regions with inflammation. Applying the concept of peripheral opioid receptors, our study aimed to evaluate the effectiveness of opioid analgesia in managing postoperative pain. The split-mouth study was carried out to evaluate the efficacy of buprenorphine added to lidocaine 2% in providing postoperative analgesia after the surgical extraction of the impacted mandibular third molar. Materials and Methods. We conducted a randomized, double-blinded, split-mouth trial among 21 patients with impacted mandibular third molars bilaterally. In all patients, bilateral impacted mandibular third molars were extracted at different periods. The primary outcomes assessed were postoperative analgesia by the VAS score and the number of rescue analgesics consumed by patients at 24, 48, and 72 hours of interval via a questionnaire. Results. There was a statistical significant difference in postoperative analgesia duration at 24 (P = 0.012) and 48 hours (P = 0.024), respectively, between the test and control group. Even though the mean number of rescue analgesics consumed by the test group was less than that of the control group, no significant difference was seen. Conclusion. Buprenorphine added to lidocaine 2% showed a minimal decrease in the pain score and duration of postoperative analgesia with no difference in the frequency of rescue analgesics consumed between the test and control.

scholarly journals Comparing the Effect of Facial Compression Bandage to That of Systemic Dexamethasone on Postsurgical Sequels after Extraction of Impacted Mandibular Third Molars: A Split-mouth Randomized Clinical Trial

2021 ◽  
Vol 9 (D) ◽  
pp. 160-165
Author(s):  
Ibraheem Hamadi ◽  
Nuraldeen Maher Al-Khanati ◽  
Zafin Kara Beit
Keyword(s):  
Third Molar ◽  
Study Groups ◽  
Third Molars ◽  
Dexamethasone Group ◽  
Surgical Extraction ◽  
Significant Difference ◽  
Impacted Mandibular Third Molars ◽  
The Mean ◽  
Mandibular Third Molars ◽  
Present Trial

AIM: The present study aimed to compare the clinical efficiency of facial pressure bandage, to that of intramuscular injection of dexamethasone (8 mg) on postsurgical sequels (swelling, pain, and trismus) of extraction of impacted mandibular third molar. METHODS: The study implemented a randomized split-mouth design. Patients with symmetrical bilateral impacted molars were eligible for the present trial. Sides were randomly assigned to two groups: pressure bandage group and dexamethasone group. The evaluated postsurgical sequels were extraoral swelling, trismus, and pain after 48 h and 7 days. RESULTS: The study included 42 impacted third molars (n = 42) in 21 patients with a mean age of 23.4 years. Most participants were females (66.7%). The mean postoperative swelling rates after 48 h and 7 days in pressure bandage group were found to be comparable to those of dexamethasone group. No significant difference was found in the mean rates of postoperative trismus between study groups after 48 h and 7 days. Differences in mean pain level scores between the pressure bandage group and dexamethasone group were statistically insignificant after 48 h and 7 days. CONCLUSION: The study findings showed that the effect of the pressure bandage was comparable to dexamethasone effect on the postsurgical sequels after surgical extraction of impacted mandibular third molars.

scholarly journals Evaluation of chronological age based on third-molar development in the Serbian population

2020 ◽  
Vol 77 (10) ◽  
pp. 1054-1059
Author(s):  
Gordana Filipovic ◽  
Nadica Djordjevic ◽  
Nikola Stojanovic ◽  
Zlata Brkic ◽  
Marija Igic ◽  
...  
Keyword(s):  
Third Molar ◽  
Chronological Age ◽  
Third Molars ◽  
Age Assessment ◽  
Vast Number ◽  
The Third ◽  
Children And Young Adults ◽  
Larger Sample ◽  
Demirjian Method

Background/Aim. Persons identification and their age assessment is necessary in vast number of cases and there are different methods used for such purposes. Numerous studies indicate that the third molar development could play a crucial role in identifying an individual`s age. The aim of this study was to determine the possibility for estimating the chronological age based on the third molar development stages in children and young adults in the Serbian population. Methods. A total of 570 Serbian patients aged 6?27 years were included in this study. Out of the total number of subjects, there were 248 males with an average age of 12.21 ? 3.91 years, and 332 females with an average age of 12.88 ? 4.06 years. Stages of dental formation were determined on orthopantomograms by comparing with standard Demirjian radiographic appearances. Results. Third molars mineralization occured more rapidly in males than in females. Most of the persons with third molar (the stage H development according to the Demirjian method) were older than 18 years. Conclusion. ?hird molar mineralization stages determination on orthopantomograms is useful additional method for determination of chronological age in living individuals. This finding might be important for forensic studies, focusing on the determination of the legally important ages. Variability among different ethnic groups has to be taken into consideration when applying this method. It is necessary to carry out extensive surveys on a larger sample in order to determine the norms for assessing the dental and chronological age of Serbian population.

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