scholarly journals Investigation of third molar impaction in Turkish orthodontic patients: Prevalence, depth and angular positions

2013 ◽  
Vol 07 (S 01) ◽  
pp. S094-S098 ◽  
Author(s):  
Ahu Topkara ◽  
Zafer Sari
Keyword(s):  
Gender Bias ◽  
Orthodontic Treatment ◽  
Chart Review ◽  
Angular Position ◽  
Third Molar ◽  
Third Molars ◽  
Related Data ◽  
Digital Database ◽  
Orthodontic Patients ◽  
University Department

ABSTRACT Objective: We aimed to investigate the prevalence, distribution, angular position, and depth of third molar impaction in a Turkish orthodontic patient population. Materials and Methods: We retrospectively reviewed the panoramic radiographs, intraoral photographs, and dental casts of 207 patients (62 men and 145 women; age 20-39 years) who had undergone orthodontic treatment at a university department of orthodontics for impacted third molars (ITMs). A comprehensive chart review of all subjects was conducted. Patient and treatment-related data were recorded in a digital database for comparative analysis. Results: The prevalence of ITMs was 54.1%, and no statistically significant gender differences were evident (61.3% in men and 51.0% in women; P = 0.23). The frequency of maxillary ITMs was 49.3% (148 of 300 teeth) while that of mandibular ITMs was 50.7% (152 of 300 teeth). The most frequently observed angulations of impaction were mesioangular for the mandible (65.1%), and distoangular for the maxilla (64.2%). Of all the ITMs analysed, 61% were partially buried in bone and 39% were completely buried. Conclusions: Third molar impaction was evident in 54.1% of a group of Turkish orthodontic patients aged 20-39 years, and there was no statistically significant gender bias. Mesioangular and distoangular inclinations were the most common in the mandible and the maxilla, respectively.

scholarly journals The ability of orthodontists and maxillofacial surgeons in predicting spontaneous eruption of mandibular third molar using panoramic serial radiographs

2020 ◽  
Vol 25 (4) ◽  
pp. 68-74
Author(s):  
Mylena Ranieri Libdy ◽  
Nicole Melres Rabello ◽  
Leandro Silva Marques ◽  
David Normando
Keyword(s):  
Orthodontic Treatment ◽  
Third Molar ◽  
Panoramic Radiograph ◽  
Third Molars ◽  
The Third ◽  
Mandibular Third Molar ◽  
Panoramic Analysis ◽  
Orthodontic Patients ◽  
Mandibular Third Molars

ABSTRACT Objective: To evaluate the skill of orthodontists and oral/maxillofacial surgeons (OMFS) in providing a prognosis of mandibular third molars spontaneously erupted, through follow-up panoramic analysis. Methods: 22 orthodontic patients treated without extraction, presenting spontaneously erupted mandibular third molars (n = 44) were analyzed through panoramic serial radiographs. The first panoramic radiograph was obtained just after orthodontic treatment (PR1), in patients aging from 13 to 19 years. A second panoramic radiograph (PR2), was obtained in average two years later. The radiographs were randomly analyzed by 54 specialists, 27 orthodontists and 27 OMFS, to obtain the opinion about the approach to be adopted to these teeth in PR1. Then, another opinion was collected by adding a serial radiograph (PR1+2). Results: The concordance of the answers was moderate for OMFS (Kappa 0.44; p< 0.0001) and significant for orthodontists (Kappa 0.39; p< 0.0001). In the analysis of the first radiograph (PR1) of the spontaneously erupted molars, OMFS indicated extraction in 44.5% of cases, while orthodontists indicated in 42%, with no difference between groups (p= 0.22). In PR1+2 analysis, orthodontists maintained the same level of extraction indication (45.6%, p= 0.08), while surgeons indicated more extractions (63.2%, p< 0.0001). Conclusions: Orthodontists and OMFS were not able to predict the eruption of the third molars that have erupted spontaneously. Both indicated extractions around half of the third molars. A follow-up analysis, including one more radiograph, did not improve the accuracy of prognosis among orthodontists and worsened for OMFS.

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 Frequency of mandibular third molar surgical impactions in orthodontic patients with different antegonial notching

2019 ◽  
Vol 8 (3) ◽  
pp. 112-116
Author(s):  
Muhammad Azeem ◽  
Muhammad Mudassar Saleem ◽  
Zubair Hassan Awaisi ◽  
Muhammad Imran Saleh ◽  
Zubair Ahmed ◽  
...  
Keyword(s):  
Third Molar ◽  
Morphological Characteristics ◽  
P Value ◽  
Third Molars ◽  
Cross Sectional ◽  
Male And Female ◽  
Mandibular Third Molar ◽  
Orthodontic Patients ◽  
Inferior Border ◽  
Medical University

Background: Few studies have been reported so far on the frequency of lower third molar impactions in patients with different morphological characteristics. Our aim in this study was to find out the frequency of impacted lower third molars in orthodontic patients with different antegonial notch depths. Material and Methods: This cross-sectional research was conducted at Orthodontics Department of Dental Section, Faisalabad Medical University, Faisalabad, and de’Montmorency College of Dentistry, Lahore, Pakistan from June 2017 to June 2019. A total of 60 orthopantomograms (OPGs) of patients with impacted lower third molars were included. The depth of antegonial notch was calculated on all the selected OPGs by measuring distance between the deepest area of the notch cavity and the tangent on the inferior border of the mandible. The patients with depth of antegonial notch of 1 mm or less were labeled as having shallow antegonial notch, while those with 3 mm or more were considered as having deep antegonial notch. Percentages and mean + SD were calculated for different variables. Depth of antegonial notching was compared between genders using ANOVA with P-value <0.5 considered as significant. Results: Of 60 orthodontic patients, there was an equal number of male and female patients (n=30). The average age of the patients was 25.5±4 years. Overall frequency of impactions was similar in both the genders and frequency of impacted lower third molars was found to be greater in patients with deeper antegonial notches. Conclusion: Mandibular third molar impactions were most frequent in orthodontic patients with deep antegonial notches

scholarly journals Indications for removal of impacted mandibular third molars and associated pathologies

2020 ◽  
Vol 13 (2) ◽  
pp. 134-139
Author(s):  
Sushil Subedi ◽  
Ujjwal Koirala ◽  
Bijayata Shrestha
Keyword(s):  
Oral Surgery ◽  
Age Groups ◽  
Angular Position ◽  
Third Molar ◽  
Common Finding ◽  
Radiographic Examination ◽  
Third Molars ◽  
Cross Sectional ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

Introduction: The purpose of this study was to assess the various indications of impacted mandibular third molar removal and pathologies associated with it. Methods: A retrospective cross-sectional study was conducted in the Department of Oral Surgery, Gandaki Medical College. The clinical case records from September 2016 to August 2019 were retrieved, reviewed, and analyzed. Surgically removed impacted mandibular third molars for which orthopantomogram were available and the lesions verified histologically were included in the study. Orthopantomograms were studied to determine the angular position of the impacted mandibular third molars and associated pathology. The data was entered in SPSS 20 and descriptive statistics was applied. Results: A total of 1344 impacted mandibular third molars (Male-709, 52.8%; Female - 635, 47.2%) were surgically extracted during the three-year period. The majority of patients (36.5%) were in the age groups of 25 - 34 years with a higher incidence of mesioangular impaction (33%). Recurrent pericoronitis (62.9%) was the most common indication followed by caries (11.7%). The radiographically detectable lesion was seen in 471 (35%) cases out of which 304 (64.5%) were symptomatic at the time of extraction. Among137 histopathologically diagnosed cases, chronic inflammatory lesion (76, 55.9%) was the most common finding. Conclusion: Awareness of the indications for removal of impacted mandibular third molars helps in proper management and prevention of future complications associated with retention and delayed extraction of such teeth. So, regular and periodic clinical and radiographic examination is required for patients with impacted mandibular third molars.

scholarly journals The Effect of Different Lower Third Molar Conditions on the Re-Crowding of Lower Anterior Teeth in the Absence of Tight Interproximal Contacts One-Year Post Orthodontic Treatment: A Pilot Study

2004 ◽  
Vol 5 (3) ◽  
pp. 66-73 ◽  
Author(s):  
Khalid M. Al-Balkhi
Keyword(s):  
Pilot Study ◽  
Orthodontic Treatment ◽  
Third Molar ◽  
Dental Arch ◽  
Third Molars ◽  
Lower Incisor ◽  
Exact Test ◽  
Anterior Teeth ◽  
One Year ◽  
The One

Abstract The role of lower third molars in lower incisor crowding is a debatable topic. Some believe the presence or eruption of lower third molars is associated with the crowding of mandibular incisors, others negate such association. Thirty-two newly debonded orthodontic patients, with ages ranging from 14-19 years, were randomly selected. No retainers were used for the lower dental arch. Removal of tight interproximal contacts of the lower anterior teeth was created and maintained by periodic abrasive stripping every 2-3 months, if needed. The cases were followed up for one year. Orthopantomographs (OPGs) and study casts were taken at debonding (post-treatment) and at the end of the one year follow up (post retention). Statistical analysis of the lower third molar conditions – erupted, unerupted, or missing with or without sufficient space for their eruption – versus re-crowding of lower incisors was evaluated using Fisher's Exact Test. The results of this pilot study revealed there was no significant correlation between the different conditions of the lower third molars versus lower anterior re-crowding in the absence of tight interproximal incisal contacts; however, a larger sample size is needed to verify such findings. Citation Al-Balkhi KM . The Effect of Different Lower Third Molar Conditions on the Re-Crowding of Lower Anterior Teeth in the Absence of Tight Interproximal Contacts One-Year Post Orthodontic Treatment: A Pilot Study. J Contemp Dent Pract 2004 August;(5)3:066-073.

scholarly journals The association between orthodontic treatment with removal of premolars and the angulation of developing mandibular third molars over time

2012 ◽  
Vol 83 (3) ◽  
pp. 376-380 ◽  
Author(s):  
Bradly Russell ◽  
Mark Skvara ◽  
Eric Draper ◽  
William R. Proffit ◽  
Ceib Philips ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Plan ◽  
Third Molar ◽  
Linear Mixed Effect Model ◽  
Vertical Position ◽  
Third Molars ◽  
Mixed Effect ◽  
Mandibular Third Molar ◽  
Mandibular Third Molars ◽  
Over Time

ABSTRACT Objective: To assess changes in mandibular third molar angulation during orthodontic treatment in subjects having either first or second premolars or neither removed. Materials and Methods: In a retrospective study approved by the institutional review board, right and left mandibular third molar angulations were compared to the vertical axis of adjacent second molars before and at the end of orthodontic treatment. The sample included 25 subjects with first premolars removed, 25 subjects with second premolars removed, and 24 subjects with no premolars removed. A decrease in angulation over time of at least 5°, so that the third molar became more vertical, was considered clinically favorable. Data were assessed by a linear mixed effect model and a proportional odds model with significance set at P &lt; .05. Results: Prior to treatment, the average mandibular third molar angulation did not differ significantly among the three study groups (P  =  .97). The average change during treatment was not significantly affected by group (P  =  .59), but a higher proportion of mandibular third molars were more vertical by at least 5° in the second premolar extraction group compared to the other two groups at the completion of treatment. Conclusion: Although creating space for third molars to erupt and function has intuitive appeal, clinicians should not assume that third molars will move upright to a vertical position even if premolar removal is performed as part of an orthodontic treatment plan.

Third-Molar Agenesis among Patients from the East Anatolian Region of Turkey

2010 ◽  
Vol 11 (4) ◽  
pp. 33-40 ◽  
Author(s):  
Fatih Kazanci ◽  
Mevlut Celikoglu ◽  
Ozkan Miloglu ◽  
Husamettin Oktay
Keyword(s):  
Third Molar ◽  
Third Molars ◽  
Congenital Deformities ◽  
Third Molar Agenesis ◽  
Significant Difference ◽  
Chi Squared ◽  
Orthodontic Patients ◽  
Molar Teeth ◽  
Spss Software ◽  
The Right

Abstract Aim The aim of this study was to determine the frequency and distribution of third-molar agenesis in orthodontic patients from the East Anatolian Region of Turkey. Methods and Materials Our data were obtained from the panoramic radiographs of the 2,579 patients 12 to 16 years of age in the Department of Orthodontics at the Atatürk University in Erzurum, Turkey. Subjects with congenital deformities, such as a cleft palate, were excluded from the study. Statistical analysis was performed using SPSS software and a chi-squared test. Results Of the 2,579 subjects, 1,964 (76.2 percent) had all four third-molar teeth, 238 (9.2 percent) had three, 214 (8.3 percent) had two, 66 (2.6 percent) had one third molar, and 97 (3.8 percent) had agenesis of all third-molar teeth. There was no significant difference in agenesis of third-molar teeth between the right and left sides and no gender predilection was noted. However, significantly more third-molar teeth were found to be missing from the maxilla compared to the mandible, with a ratio of approximately 1.5:1. Conclusion According to our results, the absence of one third molar is the most frequently detected pattern in the East Anatolian population. Additionally, the absence of third molars is more frequent in the maxilla than the mandible. Clinical Significance To date no information about third-molar agenesis in the East Anatolian population from Turkey is documented. This is believed to be the first known study on this subject in this population. Citation Kazanci F, Celikoglu M, Miloglu O, Oktay H. Third-Molar Agenesis among Patients from the East Anatolian Region of Turkey. J Contemp Dent Pract [Internet]. 2010 July; 11(4):033-040. Available from: http://www.thejcdp. com/journal/view/volume11-issue4-kazanci

scholarly journals INTRODUCTION TO ORTHODONTIC EDUCATION IN BULGARIA OF DIGITAL TECHNOLOGIES AND 3D ARCHIVING

2019 ◽  
Vol 31 (4) ◽  
pp. 873-877
Author(s):  
Sandra Atanasova ◽  
Sofija Carceva Salja ◽  
Ljubica Prosheva
Keyword(s):  
Orthodontic Treatment ◽  
Third Molar ◽  
Permanent Teeth ◽  
Individual Treatment ◽  
Dental Arch ◽  
Third Molars ◽  
Treatment Needs ◽  
Active Growth ◽  
Mandibular Incisor ◽  
The Third

Orthodontic treatment, especially during the period of active growth, can significantly affect the development of the jaws and teeth. Treatment with extraction of molars is more complicated because the space that needs to be closed is larger than the premolar spaces and the time of treatment will be longer. However, in cases where we have a lack of space, teeth protrusion or dental asymmetry, and the extraction of permanent teeth is indicated, the damaged molars should be the first option for extraction when premolars are in better condition. The third molars in different ways are affected by orthodontic therapy. One of them is orthodontic treatment by applying the extraction of the third molars, this situation being widely explored. Extraction of third molar for orthodontic reasons is justified when it prevents the eruption of the second molar or otherwise affects the other teeth. The indications of extraction and selection of teeth to be removed depend on the specific aspects of malocclusion. Premolars are teeth that are usually extracted from orthodontic reasons, but this is not the rule and depends on individual treatment needs. The decision to correct the malocclusion with teeth extraction should be based on the ratio of the size of the dental arch with the size of the teeth, facial appearance and other factors arising from the diagnosis itself. Indications for extraction of the third molars during orthodontic treatment are: mandibular incisor crowding, if they in some way constitute a obstruction of orthodontic treatment as well as preparation for orthognathic surgery. The success of an orthodontic treatment involving the extraction of molars is directly related to the patient complaints and psychological profile, the absence of diseases and skeletal discrepancies, the professional experience as well as the fact whether the patient underwent previous orthodontic treatment with extraction. Patients with partially or completely non-erupted teeth are significantly more likely to have certain consequences: before, during or after the orthodontic treatment. Therefore, orthodontists need to raise patient awareness of these consequences in the context of orthodontic treatment.

scholarly journals TOOTH EXTRACTION

2018 ◽  
Vol 25 (03) ◽  
pp. 424-427
Author(s):  
Zahida Najam ◽  
Rehmat Ullah Khan ◽  
Anum Tariq ◽  
Usman Ahmed ◽  
Ayesha Aslam
Keyword(s):  
Orthodontic Treatment ◽  
Tooth Extraction ◽  
Treatment Plan ◽  
Study Data ◽  
Permanent Teeth ◽  
Third Molars ◽  
Cross Sectional ◽  
The Past ◽  
Orthodontic Patients ◽  
Considerable Controversy

Introduction: The extraction of permanent teeth for orthodonticreasons has been a hot topic of debate in the past and continues to be of interesteven today. There is a considerable controversy concerning extraction as a treatmentadjunct which sometimes reaches to the intensity of sacred beliefs. Objective: Theaim of this study was to report the frequency of tooth extraction and its pattern inPakistani orthodontic patients. Study Design: Descriptive cross-sectional. Setting: ArmedForces Institute of Dentistry (AFID), Rawalpindi. Period: 1st July 2012 to 30th June 2014. Material& Methods: The study sample consisted of 489 patients reporting to the orthodonticdepartment at AFID. Patients between the age of 7 – 21 years were selected. Patientsbeing treated with the extraction of permanent teeth (excluding third molars) wereincluded in this study. Data was analyzed using SPSS version 24. Descriptive statisticswere calculated. Results: A total of 296 patients did not require any extraction. Theremaining 193 patients required and experienced extraction of permanent teeth aspart of their orthodontic treatment plan resulting in an over-all extraction frequencyof 39.5%. Most of the extracted teeth were first premolars especially from the upperarch. Association of extraction status (extraction vs non-extraction) with gender wasfound to be statistically insignificant (p = 0.393). Conclusion: There is a moderatefrequency of extraction in the orthodontic patients with less than half of the totalpatients requiring extraction as part of their treatment.

Pathologic Status and Changes in Mandibular Third Molar Position During Orthodontic Treatment

2002 ◽  
Vol 3 (2) ◽  
pp. 11-22 ◽  
Author(s):  
Metin Güngörmüş
Keyword(s):  
Dental Caries ◽  
Orthodontic Treatment ◽  
Third Molar ◽  
Control Group ◽  
Third Molars ◽  
Normal Position ◽  
Treatment Control ◽  
Mandibular Third Molar ◽  
Treatment Control Group ◽  
Non Parametric

Abstract Purpose The purpose of this study was to evaluate the changes in mandibular third molar (M3) position and pathologic status associated with M3 in the cases orthodontically treated. Materials and Methods This study was carried out on a total of 76 subjects, 42 males and 34 females ranging in age from 18 to 23 years. Thirty of them were treated without extractions (non-extraction group), 26 were treated with the extraction of four first premolars (extraction group), and 20 did not receive orthodontic treatment (control group). Positional changes of third molars and pathologic status associated with M3s in the cases treated orthodontically were evaluated radiographically and clinically. Data were analyzed with parametric and non-parametric tests. Results It was clinically observed that 18% of third molars in the non-extraction group and 15% of those in the extraction group erupted in normal position; 83% of third molars in both groups erupted partially in a mesioangular position. However, it was determined that 43% of the teeth that partially erupted developed pericoronitis and 4% had dental caries. It was determined radiographically that there was insufficient space for most of the M3s to erupt in the orthodontically treated cases and the angulations of these teeth were not sufficiently improved. Conclusions In this study, it was determined that 83% of the M3s in orthodontically treated cases partially erupted in a mesioangular position and 43% of these teeth were associated with pericoronitis. Citation Güngörmüs M. Pathologic Status and Changes in Mandibular Third Molar Position During Orthodontic Treatment. J Contemp Dent Pract 2002 May;(3)2: 011-022.

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