Effect of Lower Third Molar Status on Fracture of Mandibular Angle and Condyle (original) (raw)

Impact of impacted mandibular third molars in mandibular angle and condylar fractures

International Journal of Oral and Maxillofacial Surgery, 2010

Previous retrospective analyses prove that impacted mandibular third molars (M3s) increase the risk of angle fractures and decrease the risk of concomitant fractures to the condyle. The authors have attempted to verify these relationships and identify the underlying mechanism of injury. A retrospective cohort was designed for patients attending the Division of Oral and Maxillofacial Surgery from January 2001 till October 2008. The primary predictor variable was M3. The secondary predictor variables were: M3 position, classified using the Pell and Gregory system; angulation, classified using Shiller's method; and the number of visible dental roots. The outcome variables were angle and condyle fractures. Hospital charts and radiographs were used to determine and classify these variables. The study sample comprised 1102 mandibular fractures in 600 patients. For patients injured by moderate traumatic force resulting in two fractures of the mandible, the presence/absence of impacted M3s played an important role in angle/condylar fractures. Patients with impacted M3s were three times more likely to develop angle fractures and less likely to develop condylar fractures than those without impacted M3s. This study provides clinical evidence to suggest that the removal of unerupted mandibular third molars predisposes the mandible to condyle fractures.

Unerupted lower third molars and their influence on fractures of the mandibular angle and condyle

British Journal of Oral and Maxillofacial Surgery, 2012

Our aim was to assess the influence of the presence and state of impaction of mandibular third molars on the incidence of fractures of the mandibular angle and condyle. We designed a retrospective study of patients who presented for the treatment of mandibular fractures from January 2006 to April 2011. The independent variables were the presence and degree of impaction of lower third molars, and the outcome variables were the incidence of fractures of the mandibular angle and condyle. The information was acquired from hospital records and panoramic radiographs. Personal data included age, sex, mechanism of injuries, and number of fractures of the mandibular angle and condyle. We studied 110 fractures of the mandibular condyle and 80 of the angle. The incidence of fractures of the mandibular angle was higher in the group with incompletely erupted third molars (37/80, p < 0.001) and that of condylar fractures was higher in the group without (67/110, p < 0.001). An incompletely erupted third molar reduces the risk of condylar fractures and increases the risk of fractures of the mandibular angle.

Relationship between mandibular fracture and impacted lower third molar

Medicina oral, patología oral y cirugía bucal, 2009

Many studies have shown that the greatest risk of fracture of the mandibular angle is related to the presence of an unerupted lower third molar, based on the hypothesis that there is a decrease in the area of bone and absorption of the impact in this area, leading some surgeons to indicate its prophylactic removal in patients most exposed to the risk factors of facial trauma. On the other hand, other authors have observed a greater frequency of condylar fractures in patients without an impacted lower third molar. The aim of this study was to relate the condylar and angle fracture with an unerupted lower third molar, taking into account the position of the tooth. Panoramic radiographs were used to determine if the presence or absence of the third molar is related to the occurrence of mandibular fractures, such as angle and condylar fractures. In a total of 43 patients with angle fractures, the greatest percentage had erupted teeth, and 41.9% had impacted teeth; however there was no s...

Mandibular Third Molar and Angle of Mandible Fractures: An Unsolved Clinical Dilemma

Sains Malaysiana

The purpose of this study was to investigate the relationship between partially erupted impacted mandibular third and the risk for angle of mandible fracture. We designed a retrospective cohort study composed of patients who presented with mandible fractures. The predictor variables were the presence and angulation of the partially erupted impacted mandibular third molar and the distance between the apices of the mandibular third molar and the inferior border of the mandible. The outcome variable was the presence or absence of an angle fracture. Patients with a partially erupted impacted mandibular third molars had a 3.3 times greater chance of an angle fracture than patients without mandibular third molars (p<0.001). No significant association was found between the distance of the apices and angulation of the mandibular third molars to the inferior border of the mandible with angle of mandible fractures. Our findings highlight the need for enforcement of proper protective gear in young individuals who are at high risk for facial trauma.

Effect of Lower Third Molar -Presence and Position on the Occurrence Mandibular Angle and Condyle Fractures: A Prospective Clinical Study

SciDoc Publishers, 2021

Objectives:This study was conducted to evaluate the effect of the presence and angulation of mandibular third molars on the occurrence of mandibular angle and condylar fractures. Materials And Methods: A clinical study was carried out on patients with mandibular angle and /or condylar fractures attended the governmental hospitals in Erbil City from June 2015 to June 2016. Data sources were patients' hospital charts and panoramic radiographs. Predictor variables were the presence and orientation of mandibular third molars according to Pell and Gregory and Winter Classifications. Outcome variables were the presence of angle and condylar fractures. Other study variables included age, gender, and fracture aetiology. Data were analyzed using the χ2 test and Student t test. Results: The study sample consisted of 29 patients (22 males and 7 females) with 32 fractures sites with an average age of 26.5 years (range17-50 years). The results revealed that the risk of mandibular angle fracture was significantly higher in patients with impacted mandibular third molars (P < .001) and the risk of mandibular condylar fracture was significantly higher in patients lacking mandibular third molars (P < .001). The highest risk for mandibular angle fracture was associated with mesioangular angulation (58.8%) followed by vertical (35.3%) ones. Impacted mandibular third molars with Pell and Gregory class IIB orientation were most associated with mandibular angle fractures.

Mandibular Third Molar Position Influencing the Condylar and Angular Fracture Patterns

Journal of Maxillofacial and Oral Surgery, 2015

The aim of this study was to assess the influence of position of mandibular 3rd molar on angle and condylar fractures. Materials and Methods Panoramic radiographs were used to determine the mandibular fracture patterns based on the presence or absence of the third molar. Results Of the 64 patients with mandibular fractures, condyle and angle fractures were found to be 67 and 33 % respectively. The greatest percentage (75 %) of condylar fractures were associated with erupted third molar teeth, and 25 % had impacted teeth. Subcondylar region was found to be the most common site that predisposes to fracture. Moderate force lead to condylar fracture when third molar is erupted or absent and mild force showed angle fracture when third molar is impacted. Increased incidence of angle fracture was observed when tooth is in mesioangular and distoangular position. Conclusion Impacted mandibular 3rd molar leads to an increased risk of angle fracture and decreased risk of condylar fracture especially when they are more deeply seated.

Correlation of Impacted Mandibular Third Molar with Incidence of Ipsilateral Angle and Condylar Fractures in Mandibular Trauma

Pakistan Armed Forces Medical Journal

Objective: This study aims to evaluate association of impacted lower third molars with incidence of ipsilateral mandibular angle and condylar fractures. Study design: Observational study. Place of study: Maxillofacial Surgery Department Armed Forces Institute of Dentistry Materials and methods: Patients reporting to armed forces institute of dentistry maxillofacial surgery department OPD were diagnosed on the basis of history, clinical signs and symptoms and radiological examinations were categorized as Mandibular Angle and Condylar fractures and impacted lower third molars. A total number of 234 radiographs of patients were examined. Duration of study: 01 year from 01 January 2019 to 31st December 2019. Results: Out of total sample size of 234 patients, 70% (79 patients) Mandibular angle fractures occurred with patients with impacted lower third molars (112 patients) and 65% (80 patients) mandibular condylar fractures occurred with patients without impacted lower third molars (122 ...

Frequency of Mandibular 3rd Molar Presence and Position on Risk of Mandibular Angle Fracture

Journal of Medicine, Physiology and Biophysics

Objective of study was to determine the frequency of mandibular third molar presence and position in mandibular angle fractures. Study Design: Cross Sectional Study Setting: This study was carried out in department of dentistry, Nishtar institute of dentistry, Multan. Duration of Study: This study was conducted from 1 st July 2016 to 31 st January 2017. Methadology: Study was started after taking informed consent from the patients and approval of ethical committee. Fracture side was diagnosed by history and examination. Status of mandibular third molar (erupted, un-erupted and impacted) on the side of fracture was evaluated through clinical and radio-graphical examination. Data was collected for basic demographics (Age, Sex and side of fracture).Patients from both gender with age range of 25-40 years having mandibular angle fracture of any side of < one month duration were included in this study. Patients with history of extraction of mandibular third molar and those with history of fracture from gunshot injury were excluded from the study.Data was collected for mandibular third molar presence and position and noted in especially designed proforma. Results: A total of 158 patients of both gender with mandibular angle fracture of any side were included. Age range in this study was from 25 to 40 years with mean age of 32.689 ± 3.28 years, mean height 1.612 ± 0.04 meters, mean BMI 23.929 ± 2.08 Kg/m 2 and mean duration of fracture was 11.354 ± 6.08 days. Majority of the patients (55.7%) belongs to 25-33 years age groups. While males were 90.5% as compare to females 9.5%. UnErupted Mandibular third molar was seen in 12.7% patients, Erupted 44.3% and Impacted was 43%. Conclusion: Conclusion of this study is that the absence of an impacted third molar decrease the prevalence of mandibular angle fractures.

Relationship between Fractures of Mandibular Angle and the Presence of a Lower Third Molar

Objectives: In this retrospective study, we measured the relationship between the presences of a lower third molar and mandibular angle fractures. Patients &Methods: The records and radiographs of 50 patients with mandibular angle fracture were examined. The presence of a lower third molar were assessed for each patient and related to the occurrence of mandibular angle fracture. Results: Patients with presence of a lower third molar exhibited three times greater chance of a mandibular angle fracture than patients with absent lower third molar. There was a major variation in the risk for a mandibular angle fracture depending on presence of a lower third molar. Conclusion: The presence of third molar teeth provides an area of potential weakness of the mandible and predisposes the angle region to fracture & difficulty to achieve good reduction and exposes the fracture for many complications like postoperative infections and delayed healing. Fights accounted for the largest number of fr...

Frequency of unerupted mandibular third molar in mandibular angle fractures

Journal of Ayub Medical College, Abbottabad : JAMC

Fractures of the mandibular angle are common and comprise 31% of all mandibular fractures. Multiple recent studies report a 2-3 fold increased risk for mandibular angle fractures when un-erupted mandibular third molars are present. The objective of this study was to assess the frequency of un-erupted mandibular third molar in mandibular angle fractures. This cross-sectional study was conducted at the Department of Oral and Maxillofacial Surgery, Ayub Medical College, Abbottabad from April to October 2009. One hundred and two patients were included both from the outdoor and ward on consecutive non-probability sampling base. Data were recorded on a structured Performa and analysed using SPSS-16. A hemi-mandible containing un-erupted mandibular third molar was seen to have a 1.41 times the risk of mandibular angle fracture then a hemi-mandible containing an erupted mandibular third molar. The presence of unerupted mandibular third molar is associated with an increased risk for mandibul...