scholarly journals A Cohort Study of the Patterns of Third Molar Impaction in Panoramic Radiographs in Saudi Population

2017 ◽  
Vol 11 (1) ◽  
pp. 648-660 ◽  
Author(s):  
Mahmoud Al-Dajani ◽  
Anas O Abouonq ◽  
Turki A Almohammadi ◽  
Mohammed K Alruwaili ◽  
Rayan O Alswilem ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Cohort Study ◽  
Third Molar ◽  
Northern Region ◽  
Health Concern ◽  
Occlusal Plane ◽  
Third Molars ◽  
The North ◽  
Significant Difference ◽  
Vertical Impaction

Objectives: To evaluate the epidemiological patterns of third molar impaction in a cohort of patients living in the north of Saudi Arabia. Materials and Methods: A retrospective cohort study comprised of analysing 2550 Orthopantomograms (OPGs) belonging to patients who attended Aljouf University College of Dentistry between September 2013 and December 2015. OPGs were examined to determine the frequency of third molar impaction, their levels of eruption and angulations. Mixed effects logistic regression analysis was performed to calculate adjusted odds ratios. Data were weighted by age and sex based on population regional estimates. Results: 1551 patients (60.8%) with a mean age of 33.5 years-old (95%CI: 32.9 to 34) demonstrated 2650 impacted third molars. Third molars were more likely present in patients aged from 20 to 39 years-old (p<0.001); and in mandible more than maxilla (p<0.001). It showed highest vertical impaction and higher impaction rate in mandible than maxilla. Level A impaction was the most common among other levels by 1365 (53.5%). Vertical impaction was the most common pattern (1354 patients; 53.1%). Mesioangular impaction ranked second in mandible, while distoangular impaction ranked second in maxilla. There was no statistically significant difference between males and females concerning impaction frequency, depth levels and angulations. Conclusion: Impacted third molars is still a public health concern among youth and young adults. Vertically impacted mandibular third molars with their occlusal plane at the same level as the occlusal plane of adjacent tooth is the most prevalent pattern of third molar impaction in the northern region of Saudi Arabia.

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 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.

scholarly journals Mesial Migration Effect on Root Morphology of Mandibular Third Molars

2007 ◽  
Vol 77 (1) ◽  
pp. 73-76 ◽  
Author(s):  
A. Altuğ Bıçakçı ◽  
Oral Sökücü ◽  
Hasan Babacan ◽  
H. Hüseyin Köşger
Keyword(s):  
Third Molar ◽  
Root Apex ◽  
Central Line ◽  
Occlusal Plane ◽  
Third Molars ◽  
Migration Effect ◽  
Mandibular Third Molar ◽  
Root Curvature ◽  
History Of ◽  
Mandibular Third Molars

Abstract Objective: To test the hypothesis that there is a relationship between forward mandibular third molar migration and root curvature of the mandibular third molars. Materials and Methods: The study is comprised of 64 patients who had a history of unilateral mandibular first molar extraction before 16 years of age with no other missing teeth or prosthetic restorations in the mandible. The extraction space was fully or partly closed. The mean remaining space was 1.1 ± 0.41 mm. The root angles for the mesial and distal roots of the mandibular third molars were measured on the panoramic radiographs by calculating the differences between the angle formed by the long axis drawn perpendicular to the occlusal plane of the crown of mandibular third molar and the central line of the lower one ninth of the root through the root apex. The differences between the extracted and nonextracted sides for mesial and distal roots were analyzed using a paired sample t-test. Results: Both mesial and distal roots were approximately 8° more vertical on the extraction sides than on the nonextraction sides. The differences were statistically significant. Conclusion: Mesial tooth migration of mandibular third molars reduces the amount of root curvature developing on this tooth.

scholarly journals Assessment of role of mandibular third molar in lower anterior crowding among orthodontic patients of Kathmandu Nepal

2020 ◽  
Vol 10 (3) ◽  
pp. 21-26
Author(s):  
Bashu Dev Pant ◽  
Anjana Rajbhandari ◽  
Resina Pradhan ◽  
Manju Bajracharya ◽  
Surendra Maharjan ◽  
...  
Keyword(s):  
Third Molar ◽  
Cross Sectional Study ◽  
Third Molars ◽  
Chi Square ◽  
Cross Sectional ◽  
Anterior Crowding ◽  
Mandibular Third Molar ◽  
Significant Difference ◽  
Orthodontic Patients

Introduction: Crowding in mandibular arch increases with increasing age and etiology of crowding is multifactorial in nature. Role of mandibular third molar in lower anterior crowding remains a topic of controvery over a period of century. The objective of this study was to assess whether there is any correlation between presence of mandibular third molar position and lower anterior crowding. Materials and Method: On the basis of third molar position one hundred and six sample of pretreatment orthodontic patients aged between 17 to 38 years were divided into erupted, erupting and agenesis group. The study was conducted in Peoples Dental College and Hospital from January 2020 to March 2020 after obtaining ethical approval from the institutional review committee. This cross-sectional study was done on dental casts and orthopantomogram; brass wire was used for measuring arch length and digital vernier caliper for measuring tooth material with modified segmental arch analysis method. Result: Among 106 samples collected 55 (51.88%) were female and 51(48.11%) were male and the mean age was 21.53 ± 3.91 years, Chi square and ANOVA test was used for Statistical analysis. This study showed no statistically significant differences between third molar position and lower anterior crowding on right (P= 0.68) and left side (P = 0.45). The study also showed that association between the third molar position and lower anterior crowding is more on left side compared to right side. Conclusion: Mandibular third molars have not statistically significant difference in lower anterior crowding so, extraction of third molars for relieving the anterior crowding is not justifiable

scholarly journals An Evaluatıon of “Sunrıse 9’’ from EFL Teachers’ and Students’ Perspectıves in Northern Region of Iraq

2018 ◽  
Author(s):  
Arab World English Journal ◽  
Burhan Omar Mahmud
Keyword(s):  
Northern Region ◽  
Structured Interviews ◽  
Northern Iraq ◽  
9Th Grade ◽  
The North ◽  
Significant Difference ◽  
Teachers And Students ◽  
Language Classrooms ◽  
Design Activities ◽  
Qualitative Part

Textbooks are one of the essential types of materials that are extensively used in English as a second language classroom instruction. The current study tries to evaluate the textbook SUNRISE 9 based on six categories. This study intends to cover how those categories are represented in SUNRISE 9. The categories are the layout and design, activities, skills, language type, subject and content and conclusion. The present study aims at answering the questions about SUNRISE 9 from teachers’ and students’ opinions and finding out whether there is a statistically significant difference between the teachers’ and students’ responses with regard to the strengths and weaknesses of the textbook which are used in language classrooms in all basic schools in the Northern Iraq. Two data collection tools were carried out in the current study. The quantitative data were obtained using questionnaire for teachers and students with a total number of 375 9th grade students and 40 9th grade teachers. They were chosen randomly from Sulaimanyah city in the North of Iraq. The qualitative part of the study, semi-structured interviews were held among 13 teachers to gather more neccessary data. The findings reveal that the teacher participants have negative opinions towards most of the sections of the textbook and some others have not stated any opinions but the student participants generally have positive opinions about SUNRISE 9. For this English textbook SUNRISE 9, an empirical evaluative study and an in-depth method evaluation are also suggested to be conducted to find out more important results.

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.

Effect of Preoperative Single Dose Dexamethasone Injection in Masseter Muscle on Postoperative Sequelae Following Lower Impacted Third Molar Surgery

2021 ◽  
Author(s):  
Mehrzad Moghadasi ◽  
Arash Golestaneh ◽  
Arash Ghodosi ◽  
Shayan Golestani
Keyword(s):  
Masseter Muscle ◽  
Third Molar ◽  
Control Group ◽  
P Value ◽  
Surgical Removal ◽  
Third Molars ◽  
Bony Tissue ◽  
Oral Aperture ◽  
Significant Difference ◽  
Facial Swelling

Introduction: The surgical removal of impacted lower third molars involves trauma to soft and bony tissue and can result in pain, swelling and trismus. The purpose of this study was to evaluate the efficacy of dexamethasone, as a single 4 mg dose injected into the masseter muscle prior to extraction of impacted lower third molars on theses postoperative sequelae.   Materials & Methods: This prospective, randomized clinical research consisted of 43 healthy patients. The study group received 4 mg dexamethasone into the masseter muscle via intrabuccal approach immediately before starting the procedure while the control group received no corticoid. 7 days after surgery. Data were analyzed using t-test (α = 0.05).   Results: The patients administered dexamethasone showed superior results after surgery in terms of oral aperture, pain and all the facial swelling parameters, with statistically significant differences versus the controls (p value<0.001). Also there was statistically significant difference in terms of patients trismus between case and controlgroups (p value<0.001).   Conclusion: The results obtained showed that 4 mg of dexamethasone injected into the masseter muscle in the immediately before starting the procedure significantly reduces swelling, trism us and pain.  

scholarly journals Age of first pregnancy in Brazil: data from the national health survey

2019 ◽  
Vol 29 (3) ◽  
pp. 304-312
Author(s):  
Fábia Cheyenne Gomes de Morais Fernandes ◽  
Emelynne Gabrielly De Oliveira Santos ◽  
Isabelle Ribeiro Barbosa
Keyword(s):  
National Health ◽  
Health Survey ◽  
Rural Areas ◽  
National Health Survey ◽  
Northern Region ◽  
Fundamental Aspect ◽  
Related Factors ◽  
Cross Sectional ◽  
The North ◽  
Significant Difference

Introduction: The fertility pattern of Brazilian population has changed considerably in the last decades. Socioeconomic and cultural inequalities can influence the age of the first gestation, and the identification of these inequalities is a fundamental aspect of the monitoring and evaluation of women's health care policies. Objective: To analyze the age of women in their first gestation and the related factors in Brazil. Methods: A cross-sectional study using data from the National Health Survey 2013, analyzing women aged 18 to 49 years and their age in the first gestation, categorized by sociodemographic variables. Results: The North Region presented the highest percentage of pregnancy for the stratum of 10 to 14 years. The first pregnancy at the age of 15 to 19 years had the highest percentages for all regions, with a significant difference between the North and Southeast. The Southeast region obtained the highest percentage of the first pregnancy at the age of 30 to 39 years. The first pregnancy at the age of 15 to 19 years was significantly higher among the separated women; without instruction; and who live in rural areas. The first pregnancy of 10 to 14 was associated with the highest number of births that women will have throughout their lives, with a higher prevalence of 5 to 9 births. Conclusions: In Brazil, a large proportion of first pregnancies still occur in adolescence. The states of the northern region stand out with lower average ages in the first pregnancy, and this event is related to the worst socioeconomic conditions.

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.

Knowledge Attitude and Practice of General Practitioners and Interns Toward Late Mandibular Incisors Crowding; A Cross sectional study in Saudi Arabia.

2021 ◽  
Vol 15 (10) ◽  
pp. 3327-3330
Author(s):  
Ahmed Bahamid ◽  
Mohannad Alwothainani ◽  
Munirah Alotaibi ◽  
Naif Alosaimi ◽  
Nouf Alazzam ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
General Practitioners ◽  
Third Molar ◽  
Cross Sectional Study ◽  
Third Molars ◽  
Sectional Study ◽  
Cross Sectional ◽  
Mandibular Incisor ◽  
Dental Practitioners ◽  
Mandibular Incisors

Objective: This study aimed to assess and compare the knowledge and awareness of dental interns and general practitioners in Saudi Arabia about late mandibular incisor crowding. Materials and methods: This is a cross-sectional study which was conducted between June 2020 and July 2020 in Saudi Arabia and it observed dental practitioners. Results: A total of 275 subjects were included in this study; 172 (62.5%) were dental interns, 157 (57.1%) were females and 211 (76.7%) dentists were aged between 23-26 years. While most general practitioners and dental interns have heard about late mandibular incisors crowding, the majority continue to abstain from not recommending extraction of lower third molar as a means of prevention. Around half of the respondents, 134 (48.7%), claimed that the eruption of lower third molars is a possible causative factor. A greater percentage of general dental practitioners, 32 (31.1%) believed that there is a correlation between late mandibular incisors crowding and cases of relapse after an orthodontic treatment. Moreover, male participants were more knowledgeable of the fact that cases may worsen if not treated (P = 0.019). The knowledge of lower third molars eruption (P = 0.002) and unerupted/impacted lower third molars (P = 0.034) ability to cause late mandibular incisors crowding and the prophylactic extraction of the lower third molars (P = 0.009) were also significantly differed across the various age groups. Conclusion: Late mandibular incisor crowding is one of the main clinical issues in dental practice which has been subject to decreased awareness among dentists. Keywords:Dentists, knowledge, late mandibular incisor crowding, Saudi Arabia.

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