scholarly journals Predictive Factors to Assess the Difficulty to Extract Retained Lower Third Molars

2020 ◽  
Vol 39 ◽  
Author(s):  
William Andrés Vargas Madrid ◽  
Andrea Montserrat González Bustamante ◽  
Paola Elizabeth Zurita Minango
Keyword(s):  
Intraoperative Complications ◽  
Third Molar ◽  
Spatial Relationship ◽  
Cross Sectional Study ◽  
Third Molars ◽  
Surgical Time ◽  
Cross Sectional ◽  
Follicle Size ◽  
Depth Relationship

Background: Third molar eruption occurs in a very limited space. Several difficulty scales have been used to determine the complexity when extracting retained molars, which are key for surgical planning and prediction. A scale including indicators such as quality of mucosa and bone, as well as shape and number of roots is introduced. Purpose: Evaluate the difficulty in extracting retained lower third molars, using the scale proposed by Romero-Ruiz, and thus estimate the presence of intraoperative complications and surgical time. Methods: An observational descriptive cross-sectional study was carried out, with a sample of 100 extractions of retained lower third molars in patients between 16 and 40 years of age. The following variables were evaluated: spatial relationship, depth, relationship with mandible ramus/space, integrity of bone and mucosa, roots, dental follicle, and surgical time. The data were summarized in absolute frequency tables and analyzed with Pearson's Chi2 test (p < 0.05). Results: 71 % of third molars were classified as “difficult” on the scale. There were significant differences in terms of surgical time-age (p = 0.002), presence of complications-location of the third molar (p = 0.015), presence of complications-follicle size (p = 0.022), difficulty-sex (p = 0.011 ), difficulty-age (p = 0.068). Conclusions: This scale can be used to plan extraction treatments for retained lower third molars to reduce surgical times and anticipate complications.

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 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 The correlation between Rood and Shehab’s radiographic features and the incidence of inferior alveolar nerve paraesthesia following odontectomy of lower third molars

2017 ◽  
Vol 49 (2) ◽  
pp. 59
Author(s):  
David Buntoro Kamadjaja ◽  
Djodi Asmara ◽  
Gita Khairana
Keyword(s):  
Inferior Alveolar Nerve ◽  
Third Molar ◽  
Mandibular Canal ◽  
Cross Sectional Study ◽  
Third Molar Surgery ◽  
Third Molars ◽  
Chi Square ◽  
Cross Sectional ◽  
Radiographic Features ◽  
Close Relationship

Background: Odontectomy of lower third molar has a potential risk for inferior alveolar nerve impairment. Paresthesia of inferior alveolar nerve has often been associated with close relationship between the apex of lower third molar and mandibular canal. Rood and Shehab’s category has been commonly used for radiological prediction of inferior alveolar nerve injury following third molar surgery. Purpose: This study aimed to determine whether there was correlation between Rood and Shehab’s radiographic features and the incidence of inferior alveolar nerve paraesthesia following odontectomy of lower third molar. Method: This was a retrospective cross-sectional study, using data obtained from the dental record of patients who had undergone odontectomy of lower third molars in Dental hospital of Universitas Airlangga during 2 years period. Samples were cases that, from presurgical radiograph, showed close relationship between lower third molar roots and mandibular canal. The case and non-case groups were assigned based on the presence of paraesthesia and non-paraesthesia of inferior alveolar nerves, respectively. Based on Rood and Shehab’s category, the samples collected were then classified into two groups which were those whose relationship matched and did not match with the category, respectively. Data were analyzed using Chi-square correlation test. Result: Of 975 odontectomy cases included in this study, 80 cases were taken as study samples consisting of 15 and 65 cases assigned, respectively, as case and non-case. The 32 cases matched with the criteria of Rood and Shehab's category while the remainder of 48 cases did not. Of 32 cases which met the criteria of Rood and Shehab’s relationship, only 5 cases showed paraesthesia, whereas out of 48 cases which did not met the criteria 10 cases showed paraesthesia. Statistical analysis showed significance value of 0.770 (p>0.05) indicating that there was no significant correlation between relations of third molar root and mandibular canal, based on Rood and Shehab’s category, and the incidence of inferior alveolar nerve paraesthesia. Conclusion: There was no correlation between Rood and Shehab’s radiographic features and the incidence of paraesthesia of inferior alveolar nerve following odontectomy of lower third molars.

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.

scholarly journals Anatomical Position of Lower Third Molar in Relation to Mandibular Canal on Cone-Beam Computed Tomography Images in A Tertiary Care Hospital: A Descriptive Cross-sectional Study

2020 ◽  
Vol 58 (231) ◽  
Author(s):  
Bikash Chaudhary ◽  
Ujjwal Joshi ◽  
Pranaya Khanal ◽  
Alok Sagtani ◽  
Sirjana Dahal ◽  
...  
Keyword(s):  
Tertiary Care ◽  
Third Molar ◽  
Mandibular Canal ◽  
Cross Sectional Study ◽  
Care Hospital ◽  
Third Molars ◽  
Cross Sectional ◽  
Computed Tomography Images ◽  
Mandibular Third Molar ◽  
Mandibular Third Molars

Introduction: The positional relationship between the mandibularcanal with impacted mandibular third molar is the main factor of inferior alveolar nerve injury. The purpose of this study wasto classify the anatomical three dimensional relationship between the proximity of impacted mandibular third molars to the inferior alveolar canal. Methods: The descriptive cross-sectional study was conducted inthe Department of Oral and Maxillofacial Surgery of a tertiary care hospital from July 2020 to August 2020 after obtaining ethical approval from the Institutional Review Committee (Reference number 2506202001). Cone-beam computed tomography images of 200 patients’ mandibular third molars were used. A convenient sampling method was used. Data were analyzed using Statistical package for the Social Sciences. Results: Mandibular canal relative to the roots of the mandibular third molar was observed on the apical side in 104 (52.0%) and 173 (86.5%) third molars had direct contact with the mandibular canal. About 36 (97.3%) lingually placed mandibular third molars had contact with the mandibular canal. Conclusions: The findings of the study conclude that most of the mandibular third molars situated lingually had a higher occurrence of mandibular nerve involvement. The anatomic structures of the mandibular third molar and the mandibular canal may be helpful to draw upon the adequate surgical plan to avoidor reduce nerve involvement.

scholarly journals Burden Of Cysts And Tumors Around Impacted Third Molars

2019 ◽  
Vol 09 (02) ◽  
pp. 98-101
Author(s):  
Muhammad Asif Shahzad ◽  
Adnan Aslam ◽  
Imtiaz Ahmad ◽  
Daud Mirza
Keyword(s):  
Histopathological Examination ◽  
Third Molar ◽  
Cross Sectional Study ◽  
Third Molars ◽  
Sectional Study ◽  
Cross Sectional ◽  
Patients Âgés ◽  
Pathological Lesions ◽  
Male Ratio ◽  
Molar Region

Objective: To assess the frequency of cysts and tumors around impacted third molars. Study Design and Setting: Cross-sectional study was conducted at the OMFS department, Lahore Medical & Dental College, from August 2015 to January 2018. Methodology: A total of 2057 patients were operated for the removal of 2354 impacted third molars and analyzed for their associated pathological lesions(cysts/tumors). Patients were evaluated with thorough history, clinical and radiological examination. Panoramic and periapical radiographs were primarily used to assess the site of third molar impactions (maxilla/mandible) and their associated pathologies confirmed with histopathological examination. Data was analyzed using SPSS version 20. Results: The patients’ ages were between 17 to 62 years (Mean±SD, 28.12±8.585). There were n=709 (34.47%) females and n=1348 (65.53%) male with female to male ratio of 1.9:1. The mandibular to maxillary impacted third molars ratio was 1.66:1. An overall frequency of 1.36% for cysts and 0.72% for tumor associated with impacted third molars was demonstrated in the current study. The most frequently diagnosed cyst was dentigerous whereas ameloblastoma was the most commonly identified tumor. Conclusion: A relatively lower frequency (2.08%) of pathological lesions was found around third molars. The study reported a smaller number of pathological lesions affecting a significant minority of patients. It is recommended that a dentist/oral maxillofacial surgeon should be consulted at the earliest if any symptoms in the third molar region arise along with imaging of the area.

scholarly journals Dentists Perspective Regarding Prophylactic Removal Of Asymptomatic And Impacted Third Molars

2019 ◽  
Vol 09 (03) ◽  
pp. 214-217
Author(s):  
Wahab Buksh Kadri ◽  
Sameera Asif ◽  
Atif Zubairi ◽  
Sarah Jamil ◽  
Tooba Kamran ◽  
...  
Keyword(s):  
Study Design ◽  
Third Molar ◽  
Cross Sectional Study ◽  
P Value ◽  
Dental Practice ◽  
Third Molars ◽  
Sectional Study ◽  
Cross Sectional ◽  
Dental Office ◽  
General Dentists

Objective: To determine dentist’s perspective regarding NHS guidelines for prophylactic removal of Impacted Third molars among dentists of Karachi. Study Design and Setting: It was a cross sectional study design based on the questionnaire. Questionnaire was filled by total 110 general dentists selected by random sampling and was practicing in various private and government setups of Karachi to know about their preference regarding prophylactic removal of asymptomatic third molar. Methodology:The questionnaire comprised of total 13 questions to find out dentists view point about the prophylactic removal of impacted third molar. The results were then analyzed using SPSS version 23. Frequencies, percentages of different variables used in the study were calculated to identify the co-relation among different attributes. P-value of less than or equal to 0.05 was considered statistically significant. Results:The study reflected that 71.8% dentists were aware with the NHS Guidelines for removal of asymptomatic & impacted third molars while 28.2% dentists preferred conventional approach. The study also revealed Mesioangular impaction as being the most commonly observed type of impaction in the dental practice. Conclusion: It was concluded from this study that majority of dentists were aware of the guidelines provided by NHS and regarding the angulation of impacted teeth most of the impactions seen at the dental office were Mesioangular.

scholarly journals Panoramic Radiographic Analysis of Signs of Proximity to the Third Molar Roots of the Mandibular Canal in Yemen

2020 ◽  
Keyword(s):  
Third Molar ◽  
Mandibular Canal ◽  
Cross Sectional Study ◽  
Third Molars ◽  
Cross Sectional ◽  
Panoramic Radiographs ◽  
Second Molar ◽  
Female Patients ◽  
The Third ◽  
Dental Clinics

Objectives: The objectives of this study were to assess the relationship between the third molar and the mandibular canal, to identify the radiographic markers most prevalent in predicting connectivity between these structures, and to associate these signs and proximity with the position of the third molar according to Bell, Gregory’s and Winter’s classifications. Subjects and methods: A retrospective cross-sectional study was conducted in the city of Sana’a on a sample of Yemeni patients in Ammar Dental Clinics who underwent panoramic radiography in the year 2019 until September 2020. The study consisted of panoramic radiographs of 597 patients with third molars with a total of 1017 third molars; the number of males was 216 (36.2%) and 381 females (63.8%). The panoramic radiographs were evaluated for proximity signs. Inclusion criteria were patients of both sexes who had at least a fully formed third molar of the mandible that was adjacent to the second molar. The radiographs were excluded if evidence of cystic, neoplastic, or extensive caries processes was detected. Seven radiological signs were used to determine if there was contact between the third molar and the mandibular canal. Results: A proximity to the mandibular canal was verified for 620 (61%) of 1017 third molars. The most frequent radiographic signs of proximity were darkened roots (315 teeth [31%]) and discontinuity of the mandibular canal (267 teeth [26.3%]). Third molar/mandibular canal proximity was found significantly more frequently in female patients and in patients aged 24 years and younger (P < 0.001). The tooth positions most frequently associated with proximity between the third molar and the mandibular canal were position C (highest point of the third molar located at or below the cervical margin of the second molar) and the mesioangular position (long axis of the third molar angled mesially toward the second molar). Conclusions: The frequency of third molar/ mandibular canal proximity was greater in female patients and patients aged 24 years or younger. The most frequently observed signs of proximity were darkening of the roots and discontinuity of the mandibular canal. The tooth positions most frequently associated with proximity of the third molar to the mandibular canal were position C and the mesioangular position.

scholarly journals Anatomical positions of the inferior dental canal and its relationship with impacted lower third molars in 18- to 29-year-old Ecuadorians.

2018 ◽  
Vol 5 (2) ◽  
pp. 71-74
Author(s):  
Veronica Sevilla ◽  
Xavier Inga ◽  
Felipe Castro ◽  
Jose Aguilar
Keyword(s):  
Third Molar ◽  
Anatomical Variations ◽  
Cross Sectional Study ◽  
Third Molars ◽  
Cross Sectional ◽  
X Ray ◽  
The Third ◽  
Imaging Center ◽  
X Ray Imaging ◽  
Inferior Dental Canal

Abstract: The third molars are the dental organs with the most variations in terms of their formation and time of eruption, which can cause several pathologies. The incidence of third molar impaction varies between 20% and 30%, with predominance in females. Through the inferior dental canal, goes the inferior dental nerve to innervate the molars and lower premolars. Recent studies on variations in the position of the lower dental canal have shown a low incidence of variations. Objective: To determine the prevalence of anatomical variations of the inferior dental canal in relation to impacted lower third molars, by means of digital image analysis in patients who attended the X-Ray Imaging Center in Azogues in 2016. Materials and Methods: A cross-sectional study was conducted on patients who attended the center X-Ray Imaging Center in Azogues in 2016. The following variables were analyzed: sex, age, variation of the position of the inferior dental canal in relation to the third impacted molar, the radiographic details according to the Monaco classification, and tooth position according to the Winter classification. In total, 64 radiographs were analyzed. Results: It was found that 5% of participants showed no relation of the inferior dental canal with the lower third molar, 72% had a relation of the dental canal with the third molar, and 23% presented with absence of the third molar. According to the Winter classification, the prevalence was 53% mesioangular, 18% horizontal, 19% vertical, 6% vestibuloversion, and 4% inverted. Conclusion: The third molars present high indexes of relation with the inferior dental canal in 18- to 29-year-old Ecuadorians.

Hearing Outcome of Stapes Surgery in NIENT, Bangladesh

2020 ◽  
Vol 26 (1) ◽  
pp. 31-36
Author(s):  
Md Zakaria Sarkar ◽  
AHM Ferdows Nur ◽  
Utpal Kumar Dutta ◽  
Muhammad Rafiqul Islam ◽  
Debabrota Roy ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Cross Sectional Study ◽  
Surgical Trauma ◽  
Group 14 ◽  
Progressive Hearing Loss ◽  
Cross Sectional ◽  
Hearing Gain ◽  
Hearing Outcome

Objective: The aim of this study was to evaluate hearing outcome after stapedotomy in patients with Otosclerosis. Methods: This cross sectional study was carried out from July 2017 to January 2019 in National Institute of ENT, Unit V. About 22 patients with Otosclerosis were included in this study. Diagnosis of Otosclerosis was based on the history, medical status with Otoscopy, Tuning fork tests and Audiometric tests. We compiled data on the pre and post operative air-bone gap (ABG) at 0.5, 1, 2 KHZ. The ABG was Calculated using AC and BC thresholds on the same audiogram. Post operative hearing gain was then Calculated from the ABG before the operation minus the ABG of the last follow up examination Results: In this study most of the cases were age group 14-30 years (72.7%), female (54.5%). Most common symptoms was progressive hearing loss, tinnitus (77.8%).The average preoperative hearing loss in this study was (AC) was 48.31±7.68. The average post opt. hearing (AC) at follow up was 28.95±10.30 with an average hearing gain of 15.40±8.53 dB which was significant. The average pre-operative ABG was 28.99 dB ± 8.10. The average post opt. ABG was analyzed at 1 follow up showed ABG 13.18±8.09 dB which was found to be significant. Conclusion: Stapedotomy is an effective surgical procedure for the treatment of otosclerosis which leads to improvement in patient’s quality of life. A favorable hearing outcome can be obtained by the combination of experienced hands with minimal surgical trauma and appropriate surgical technique. Bangladesh J Otorhinolaryngol; April 2020; 26(1): 31-36

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