Temporomandibular Joint Clicking Research Articles

구강악습관과 측두하악장애 유병상태와의 관련성

Purpose: This study aims to examine correlation between temporomandibular disorder and oral habits that have been known to cause temporomandibular disorder with both male and female undergraduates. Methods: To figure out correlation between temporomandibular disorder and oral habits, a survey was conducted to 500 students of two universities located in Daegu Metropolitan City and Gyeongsangbuk-do, and excluding the ones unreliably answered or indicating errors, total 427 (85.4%) out of 500 questionnaire sheets were used for final analysis. Results: Female students showed higher prevalence rates than male students in temporomandibular joint pain and temporomandibular joint clicking, and students having the lip biting habit, tongue thrust habit, or bruxism habit indicated a higher prevalence rate of temporomandibular joint pain than normal students. Also, students having the tongue thrust habit indicated a significantly higher prevalence rate of temporomandibular joint clicking than normal students not having it. And about trismus, students having the bruxism habit showed a significantly higher prevalence rate than normal students not having it. Conclusion: The findings imply that oral habits like lip biting, tongue thrust, or bruxism are closely related with temporomandibular joint pain, tongue thrust influences temporomandibular joint clicking, and bruxism does affect trismus.

Prevalence of Temporomandibular Joint Disorder and Stress Related Dental Attritions Among Army Personnel

Background: Dental attrition is capable of causing toothache, temporomandibular disorders (TMDs), and vertical facial dimension loss. It may also harden prosthesis fabrication. The most frequent causes of this problem are stress and mental tensions. Objectives: However, there is no documented or published data on the prevalence of dental attrition and TMDs among army personnel. Nevertheless, by timely recognition of the susceptible cases, it is possible to prevent or stop the development of this condition. Patients and Methods: The participants were patients seeking general dentistry treatments in two military based centers in Tehran. Sample consisted of 200 army personnel and 200 civilian patients. All the participants were divided into three age groups: under 30, between 30 and 50, and above 50 years old. The examinations included dental attrition, temporomandibular joint (TMJ) click on opening or closing, limitation on mouth opening, pain on TMJ or chewing muscle or tenderness in palpation. The participants were also asked to declare whether they have contributed in the imposed war. Results: Dental attrition was significantly more frequent in army personnel than civilian population. Also the prevalence of such a problem was significantly more frequent in those participated at war. Considering other examinations, no statistically significant differences were seen between army personnel and lay persons. Conclusions: In order to prevent or treat dental attrition in susceptible army personnel, part-time wear of night guard may be prescribed. Keywords: Tooth Attrition; Military Personnel; Temporomandibular Joint Disorders

ANKH Polymorphisms and Clicking of the Temporomandibular Joint in Dental Residents.

This study aimed to carry out a case-control research study to assess occurrence of clicking of the temporomandibular joint (TMJ) in order to establish the relationship between TMJ clicking and the genotype of "ANKH inorganic pyrophosphate transport regulator" (ANKH) polymorphisms. A sample of 41 first-year dental residents was selected. Each was examined using standard clinical procedures and genotyping techniques. The participation rate was 91.8%. The prevalence of TMJ clicking was 51.2% (95% CI: 35.7-66.7%). Occurrence of TMJ clicking was not related to age, gender and genotypes of ANKH-OR as well as ANKH-TR polymorphisms (p≥0.165). A similar distribution of ANKH genotypes in TMJ clicking and asymptomatic individuals has been demonstrated by this study. A high percentage of TMJ clicking has been confirmed. Future investigations are indicated.

Oral health status and treatment needs of substance abusers attending de-addiction centers in Bangalore city

Introduction: Studies in different countries, demonstrated high caries prevalence, poor gingival health, poor motivation and oral hygiene practices with substance abusers. The substances may be natural or synthetic, the use of which has a psychoactive effect and alters or modifies the functions of a living organism. Aim: To assess the oral health status and treatment needs of substance abusers attending de-addiction centers in Bangalore. Materials and Methods: A cross-sectional study was conducted among 426 substance abusers admitted in the wards who were randomly selected from 5 selected de-addiction centers from April 2009 to September 2009. The study population consisted of four groups namely alcohol, nicotine, alcohol + nicotine and other drugs group from the selected de-addiction centers. The oral health status of the patients was determined based on the WHO proforma1997. Descriptive statistics, Pearson's Chi-square test and ANOVA tests were applied. Results: The study population consisted of 426 male subjects in the age group of 16-65 years old with an average of 36.35 years. Alcohol + nicotine group had significantly more temporomandibular joint clicking than other groups (P < 0.05). Ninety-Six oral mucosal lesions were found in the study. Alcohol group had significantly higher mean CPI code 3 (pockets 4-5 mm) than the other groups (P < 0.05). The prevalence of decayed, missing, filled teeth in the study population was 83.33%. The mean DMFT of the study population is 4.15 ± 3.74 standard deviation. The mean DMFT of the Alcohol group was significantly higher than the other combinations group (P < 0.01). Conclusions: The oral health status of substance abusers was poor. There were a large number of oral mucosal lesions noted in them. The dental caries status and periodontal status was the worst in the alcohol group.

Diurnal Difference between Mandibular Condyle Movement with Unilateral Temporomandibular Joint Clicking in the Morning and that in the Evening

Diurnal Difference between Mandibular Condyle Movement with Unilateral Temporomandibular Joint Clicking in the Morning and that in the Evening

Functional and Radiologic Outcome of Open Reduction and Internal Fixation of Condylar Head and Neck Fractures Using Miniplate or Microplate System

Although the appropriate management of condylar process fractures after miniplate or microplate fixation has been described, there has been no comparative analysis of these plating systems. A retrospective review of patients who underwent open reduction and internal fixation (ORIF) of condylar head or neck fractures at our institution from January 2000 through August 2010 identified 70 patients. Of these, 38 were treated with microplates and 32 with miniplates. The primary functional and radiographic results were the maximal mouth opening and condylar bone resorption, respectively. The rates of complications, including malocclusion, chin deviation, temporomandibular joint complaints, and facial nerve palsy, were recorded. The maximal mouth opening was larger in the microplate group than in the miniplate group throughout the follow-up period; this difference was statistically significant 12 (P = 0.020), 18 (P = 0.026), and 24 (P = 0.032) months after ORIF. Similarly, the radiographic scores for bone resorption and condyle morphology were significantly better in the microplate group than in the miniplate group throughout the follow-up period [6 (P = 0.011), 12 (P = 0.035), 24 (P = 0.026), and 48 (P = 0.040) months after ORIF]. Moreover, patients who underwent miniplate fixation experienced a significantly higher incidence of temporomandibular joint click than those who underwent microplate fixation (P = 0.014). Microplates limit dissection, providing excellent fixation for intracapsular condylar head fractures, and also provide adequate rigidity for fixation of condylar neck fractures. Microplate fixation of condylar head and neck fractures yielded excellent functional and radiographic results. The rates of complications after microplate fixation were equal to or less than those in the miniplate group. Prospective studies are needed to confirm these findings.

Botulinum toxin injection for the management of temporomandibular joint clicking

Background and objectives: The aim of the present study was to investigate the effect of Botulinum Toxin Type-A (BTX-A) injection in the lateral pterygoid (LP) muscle on Temporomandibular Joint (TMJ) clicking.

부정교합과 측두하악장애 유병상태와의 관련성에 관한 연구

Purpose: The study is to discover the relationship between malocclusion, which is known to cause temporomandibular disorder, and temporomandibular disorder and is aimed at college students who have retained their natural teeth. Methods: The study was aimed at 500 college students at two colleges located in Gyeongsangbuk-do and Daegu metropolitan city and survey research was conducted in order to discover any relationship between malocclusion and temporomandibular disorder. After excluding copies with insincere answers or errors out of the 500 copies of the questionnaire, the study used a total of 435 copies (87%) for research and analysis. Results: Females showed a prevalence of temporomandibular joint clicking and temporomandibular joint pain,and students who had crowding showed a high prevalence of temporomandibular joint pain, temporomandibular joint clicking, and trismus. Students whose occlusal condition was not good demonstrated a high prevalence of temporomandibular joint pain, temporomandibular joint clicking, and trismus. Students who had maxillary protrusion showed a prevalence of temporomandibular joint clicking and trimus, whereas students who had mandibular protrusion showed a high prevalence of temporomandibular joint clicking. Conclusion: Students whose dental condition was crowding and students whose occlusal condition was not good exhibited a high prevalence of three types of symptoms of temporomandibular disorder. Meanwhile student who had maxillary protrusion showed a high prevalence of temporomandibular joint clicking and trismus, while students who had mandibular protrusion showed a prevalence of temporomandibular joint clicking.

Dental malocclusion is not related to temporomandibular joint clicking: a logistic regression analysis in a patient population

To assess the association of several dental malocclusion features with temporomandibular joint (TMJ) click sounds in a population of temporomandibular disorder (TMD) patients. Four hundred forty-two TMD patients (72% female; 32.2 ± 5.7 years, range 25-44 years) were divided into a TMJ clicking and a no-TMJ clicking group, based on the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) assessment. Seven occlusal features were recorded for each patient: (1) posterior crossbite, (2) overbite, (3) open bite, (4) overjet, (5) mediotrusive and (6) laterotrusive interferences and (7) retruded contact position to maximum intercuspation (RCP-MI) slide length. A logistic regression model was created to estimate the association of occlusal features with TMJ clicking. The difference between the groups as for the prevalence of the various occlusal features was generally not statistically significant, with minor exceptions. Mediotrusive interferences (P = .015) and RCP-MI slide ≥2 mm (P = .001) were the two occlusal features that were associated with the probability of having TMJ clicking, even if the adjusted odds ratios for TMJ clicking were low for both variables (1.63 and 1.89, respectively). Moreover, the amount of variance in the prevalence of TMJ clicking that was predicted by the final model was as low as 4.5% (R(2) = 0.045). Findings from the present investigation suggested that in a population of TMD patients, the contribution of dental malocclusion features to predict TMJ click sounds is minimal with no clinical relevance.

Botulinum toxin injection for management of temporomandibular joint clicking

The aim of the present study was to investigate the effect of botulinum toxin type A (BTX-A) injection in the lateral pterygoid (LP) muscle on temporomandibular joint (TMJ) clicking. The study enrolled seven patients with a total of 11 joints; all patients were stage I or II of Wilke's staging for internal derangement. BTX-A was injected in the ipsilateral LP muscle with electromyogram (EMG) guidance and the subjects were assessed for 4 months. Maximum inter-incisal opening, range of lateral movement, and the presence of a click were recorded throughout the follow-up period, and magnetic resonance imaging (MRI) was ordered at the end of the 4 months. The results showed that the decrease in inter-incisal opening and side to side movement immediately postoperative was statistically significant, while the difference by the end of the follow-up period was insignificant. MRI showed a marked improvement in disc position postoperatively. It may be concluded that BTX injection in the LP muscle leads to the disappearance of joint clicking clinically and a significant improvement in disc position as shown on MRI.

Temporomandibular Joints in Asymptomatic and Symptomatic Nonpatient Volunteers: A Prospective 15-year Follow-up Clinical and MR Imaging Study

To determine the incidence, prevalence, and progression of temporomandibular joint (TMJ) magnetic resonance (MR) imaging findings and symptoms during 15 years in adult asymptomatic and symptomatic volunteers (nonpatients). A regional committee for medical research ethics approved the study, and informed volunteer consent was obtained. Fifty-three volunteers were examined at study inception. For clinical assessment, a self-administered questionnaire was given, followed by an interview with each volunteer at study inception, at 1 year later, and at 15 years later. Bilateral TMJ MR imaging and clinical examination were performed at inception and at 15-year follow-up. The MR images were assessed for disk position, bone status, and joint fluid. All 53 volunteers participated at 1-year follow-up, and 50 of 53 volunteers participated at 15-year follow-up; of these 50 volunteers, 47 underwent MR imaging. The Fisher exact test was used to determine differences between groups, and the Wilcoxon signed-rank test was used to determine differences in prevalence of TMJ symptoms among the three examination times. At study inception, TMJ disk displacement was observed in 31% of asymptomatic volunteers (nine of 29) compared with 89% of symptomatic volunteers (16 of 18, P < .001). Inceptive TMJ status was maintained after 15 years in 91% (43 of 47). Unilateral progression was observed in four volunteers (9%); one was symptomatic and three were asymptomatic. Progression involved development of new disk displacement (n = 1), development of new bone changes (n = 2), and aggravation from reducing to nonreducing disk displacement (n = 1). Prevalence of TMJ symptoms did not change significantly between examination times (P = .77). TMJ clicking was the most common clinical symptom. Volunteers with mild symptoms had a prevalence of disk displacement of the same magnitude as that reported in patients, although most volunteers, symptomatic as well as asymptomatic, maintained their TMJ status during 15 years.

Longitudinal course of temporomandibular joint sounds in Japanese children and adolescents

BackgroundMany epidemiological studies of temporomandibular disorders (TMDs) in children and adolescents have been performed. However, the results of such studies have varied, and a comprehensive view of the prevalence and severity of symptoms and signs is difficult to obtain. In the present study, temporomandibular joint (TMJ) sounds, which are the most common signs and symptoms of TMD, were observed longitudinally, and the need for treatment was evaluated.MethodsSeventy individuals in six age groups (5, 6, 7, 8, 9, and 10 years old at the beginning of the observation period) participated in an epidemiological investigation conducted between 1987 and 1992. During each clinical examination, the following parameters were examined: maximum unassisted jaw opening, TMJ clicking, and the coincidence or difference between the midlines of the upper central incisors and the lower central incisors. In addition, the bilateral bite force was recorded, and the numbers of erupted, decayed, and filled teeth were recorded.ResultsEight individuals dropped out because they moved. No TMJ dysfunction requiring treatment was observed in this series. TMJ clicking was observed in 30 subjects (48%); however, this symptom was temporary in most of subjects (26 subjects; 42%), and only 3 subjects (5%) had persistent clicking (continuing until the end of the observation period). The incidences of clicking were not significantly different among the six groups (x2 = 4.265). Clicking was significantly more common among girls (19 subjects) than among boys (11 subjects; P = 0.042). A significantly lower bite force (17 ± 18 kg) was recorded for the subjects with persistent clicking, compared with that of the other subjects (8- and 9-year-olds; mixed dentition) without persistent clicking (32 ± 17 kg). The persistent clicking began at an age of 11 or 12 years (permanent dentition).ConclusionMost of the clicking observed in the children and adolescents was temporary, and no difference in the incidence of clicking was observed among the six age groups. Girls had a significantly higher incidence of clicking than boys.

Prevalence of temporomandibular joint diseases diagnosed by magnetic resonance imagining

The aim of this study was to analyze the prevalence of internal derangement of the temporomandibular joint (TMJ) diagnosed by magnetic resonance imaging (MRI). The following data was evaluated: chief complaint, gender, age, side affected, diagnosis, joint clicking, mouth opening, dental prosthesis and presence of muscle disorders. The sample comprised 59 successive patients (118 TMJs), 46 females and 13 males; ages ranged from 14 to 92 years. All patients were examined from 2002 to 2006. Anterior disc displacement with reduction was the most common disorder (60 joints); anterior disc displacement without reduction appeared in 17 joints; TNJ effusion (25 joints); open lock (1 joint); TMJ osteoarthritis (8 joints) and no pathology in 7 cases. TMJ click was present in 27 and 32 had no clicking. There were associated muscle disorders in 22 cases. Mouth opening ranged from 10 to 61 mm; 24 patients were using some kind of dental prosthesis. The following conclusions are drawn: anterior disc displacement with reduction is the most common pathological condition in patients submitted to MRI; there is a marked predominance in women; and the presence of muscle pathology associated with intracapsular pathology is more prevalent in women.

Prevalence and risk factors of sleep bruxism and wake-time tooth clenching in a 7- to 17-yr-old population

Sleep-related bruxism (SB) and wake-time tooth clenching (TC) have been associated with temporomandibular disorders (TMDs), headache, and sleep and behavioral complaints. This study aimed to assess the prevalence and risk factors of these signs and symptoms in a 7- to 17-yr-old population (n = 604) seeking orthodontic treatment. Data were collected by questionnaire and by a clinical examination assessing craniofacial morphology and dental status. Sleep-related bruxism was reported by 15% of the population and TC was reported by 12.4%. The SB group (n = 58) was mainly composed of children (67.3% were ≤12 yr of age) and the TC group (n = 42) was mainly composed of adolescents (78.6% were ≥13 yr of age). The craniofacial morphology of over 60% of SB subjects was dental class II and 28.1% were a brachyfacial type. Compared with controls (n = 220), SB subjects were more at risk of experiencing jaw muscle fatigue [adjusted OR (AOR) = 10.5], headache (AOR = 4.3), and loud breathing during sleep (AOR = 3.1). Compared with controls, TC subjects reported more temporomandibular joint clicking (AOR = 5), jaw muscle fatigue (AOR = 13.5), and several sleep and behavioral complaints. Sleep- and wake-time parafunctions are frequently associated with signs and symptoms suggestive of TMDs, and with sleep and behavioral problems. Their clinical assessment during the planning of orthodontic treatment is recommended.

Comparison of three treatment options for painful temporomandibular joint clicking

A randomized clinical trial was performed to evaluate the efficacy of three treatment options, including anterior positioning splint therapy, physical therapy, and physical therapy in addition to splint therapy, in terms of treatment outcome, in patients with painful temporomandibular joint clicking. Sixty patients suffering from acute pain and dysfunction were divided randomly into three treatment groups. Twenty patients underwent anterior positioning splint therapy (group I), 20 patients received solely physical therapy (group II), and 20 subjects received physical treatment in addition to splinting (group III). All patients were examined before and after the treatment using a visual analogue scale (VAS) and digital palpation of joint sounds. The data were analyzed using the Kruskal-Wallis, one-way ANOVA and Tukey tests at a significance level of P < 0.05. In comparison with the baseline, subjective pain was decreased significantly (P < 0.05) in all three groups. A significant difference was observed between groups I and II (P <0.05), whereas no significant difference was detected between groups II and III. Six patients in group III did not continue the treatment after physical therapy. The numbers of pain-free patients were 12 in group I, 5 in group II and 9 in group III. We observed a reduction in the frequency of joint sounds across the entire sample (P < 0.05). Anterior positioning splint therapy appears to be the best treatment method for reduction of pain and joint sounds in patients with TMD, compared with the other two methods studied.

Soft Tissue Reduction During Open Treatment of Intracapsular Condylar Fracture of the Temporomandibular Joint: Our Institution's Experience

To evaluate the effect of soft tissue reduction during open surgery of intracapsular condylar fracture (ICF) of the temporomandibular joint (TMJ). A total of 129 patients (164 TMJs) with ICF were treated from June 2004 to May 2009. Osteosynthesis was performed by different methods without stripping the lateral pterygoid muscle (LPM). The disc was reduced with or without transecting adhesions, release of the epimysium of the LPM, and anchorage to the condyle. Retrodiscal tissue tear was repaired. The patients were evaluated by computed tomography, magnetic resonance imaging, and clinical signs pre- and postoperatively. Inferomedial displacement of the condylar segment and disc occurred in 97.6% of cases. Adhesion of the superior joint space was found in 37 of 160 TMJs (23.1%). Retrodiscal tissue tear combined with disc displacement was found in 119 of 160 TMJs (74.4%). The condylar stump was found to be superolaterally displaced in 30.6% (49/160) and laterally dislocated out of the fossa in 41.9% (69/160). A lateral capsular tear was observed in 87 of 160 TMJs (54.4%). The condylar fragments and the discs were reduced and fixed completely with preservation of the attachment of the LPM. Coronal CT revealed that 95.6% (130/160 cases) of ICFs were correctly reduced and fixed. Postoperative magnetic resonance imaging showed that the disc was reduced to its normal position in 40 of 42 TMJs. Long-term complications of 45 patients included fibrous ankylosis in 1 case (0.8%), mouth opening limitation (<2.5 cm) in 5 cases, (3.9%), condyle resorption in 3 cases (2.3%) that needed plate removal, facial nerve injury in 3 cases (2.3%), TMJ click in 2 cases (1.6%), mouth open with deviation in 7 cases (5.4%), and malocclusion in 1 case (0.8%). Anatomic reduction of soft tissue was of benefit for biomechanical function of the TMJ and decreased the complications of open surgery.

Modified Preauricular Approach and Rigid Internal Fixation for Intracapsular Condyle Fracture of the Mandible

This article reports a modified preauricular approach for intracapsular condyle fracture (ICF) of the mandible and evaluates the stability of various internal fixation methods in the temporomandibular joint (TMJ) division of the Shanghai Ninth People's Hospital. One hundred fifty-one patients with 208 ICFs diagnosed by panoramic radiograph and computed tomographic (CT) scan received open treatment in the TMJ division from 1999 to 2008. Their charts were reviewed. Classification of the fracture was based on coronal CT scan. Forty-three patients also underwent magnetic resonance imaging before the operation to check displacement of the disc. A modified preauricular approach was used for all patients. Various internal fixation methods from wire, to screw, to plate were evaluated for stability. There were 110 ICFs of type A fracture, 60 of type B fracture, 9 of type C fracture, 25 of type M fracture, and 4 fractures without displacement. A modified preauricular approach was used for open treatment, which can better expose and protect the TMJ and superficial temporal vessels. Wire and plate is the commonly used stable fixation method for type A, B, and M fractures, which accounted for 56.7% (101/178). Small fracture fragments were removed with disc repositioning for all type C fractures (n = 9) and some type B (n = 9) and M fractures (n = 5). Three type M fracture and 3 nondisplaced ICFs were treated closed. Eighty-nine patients with 115 ICFs had postoperative CT scan, which showed anatomic and nearly anatomic fracture reduction rates of 95.6%. Thirty-five patients with 44 ICFs had long-term follow-ups from 3 months to 5 years. Among them, 63.2% (n = 12/19) pediatric ICFs had continuous condyle growth after open reduction and rigid fixation; 92% adults had ICFs that healed well (n = 23/25). Postoperative complications were facial nerve injury (n = 3), TMJ clicking (n = 1), and condyle resorption that required plate removal (n = 4). A modified preauricular approach provides better exposure and protection of the TMJ and superficial temporal vessels. Wire and plate provides stable fixation for type A and some type B and M fractures. Open reduction and rigid fixation produce good results for adult patients.

The effectiveness of physiotherapy in cervicogenic headache and concurring temporomandibular dysfunction: a case report

The aim of this case report is to describe the use of physio-therapy interventions in a patient diagnosed with cervicogenic headache(CGH) and temporomandibular dysfunction (TMD). This case study involveda 26 year old male. The subject’s cervical and temporomandibular joint(TMJ) active range of movement; passive accessory movements; headacheintensity, periodicity and response to analgesics; TMJ clicking and discomfort;Numerical Pain Rating Scale (NPRS) scores, were assessed on initial assessment and on discharge 14 weeks later. The physiotherapy interventionincluded cervical and TMJ mobilisation (Maitland approach); trigger pointtherapy and massage; strengthening of the deep cervical neck flexors and scapulothoracic muscles; and posture correction. The subject improved on all outcome measures and was discharged after nine physiotherapy sessions, withfull cervical and TMJ range of movement, improved muscle strength and decreased headache intensity and frequency.This case describes a positive outcome for a patient diagnosed with cervical headaches and temporomandibular dysfunction in which physiotherapy interventions aimed at correcting joint dysfunction, myofascial pain and decreased muscle strength were used effectively.

Long-term follow up of improvements of anterior disc displacement with reduction using combination therapy: a case report

This article is to review our approach to disc displacement with reduction case by using combination therapy of modified functional appliance (mFA) and multibracket appliance (MBA). This patient was a 17-year-old Japanese female who was complaining of right-side temporomandibular joint (TMJ) clicking, pain during mouth opening, and limitation of condylar movement at initial medical examination. We assumed that the clicking during mouth closing occurred in the mandibular position in which the displaced disc returned to normal position on the condyle, as we called therapeutic reference position (TRP), and performed mFA therapy, by which disappearance of clicking and subjective symptoms were obtained. We stabilized the occlusion by mFA and MBA setting at TRP and reconstructed occlusion was obtained with disappearance of all the clinical symptoms passed about 4 years of postretention. Therefore, it is possible that the combination therapy of mFA and MBA of occlusal reconstruction seems to be an effective treatment for the disc displacement with reduction cases.

일부 대학생의 악안면외상경험과 측두하악장애 유병상태와의 관련성

이 연구는 악안면외상경험과 측두하악장애 유병상태와의 관련성을 조사하여 측두하악장애의 예방과 치료계획에 도움을 주고자 울산광역시에 소재한 C보건대학 학생 370명을 대상으로 설문조사를 실시하였다. 수집된 자료는 SPSS 프로그램을 이용하여 분석하여 다음과 같은 결론을 얻었다. 1. 측두하악관절잡음 유병률은 남학생 25.7%, 여학생 22.7%로 남학생이 측두관절잡음 발생이 높았으나(p<0.01), 학년별로는 유의한 차이를 보이지 않았다. 2. 측두하악동통 유병률은 여학생이 높게 나타났다. 3. 개구장애 유병률은 여학생 10.8%, 남학생 7.0%로 여학생이 개구장애 발생이 약간 높게 나타났다. 4 측두하악장애로 인한 치료 경험은 남학생 6.5%, 여학생 4.3%로 남학생이 측두하악장애 치료경험률이 높게 나타났다(p<0.05). 5. 악 안연외상 경험률은 남학생이 높게 나타났으며(p<0.01), 악안면외상 경험 경로 중 넘어짐이 가장 많았으며, 운동, 기타 순으로 나타났다. 6. 악안면 외상과 측두하악장애와의 관련성은 악악면외상과 측두하악관절잡 음 간에 통계적으로 유의한 관련성을 보였다(p<0.01). 이상의 결과 악안면외상 경험유무와 측두하악장애 간에는 관련성이 존재하며 악안면외상을 측두하악장애 발생의 기여요인으로 볼 수 있겠다. 따라서 향후 측두하악장애를 일으키는 요인이 무엇인지 그 관련요인에 대한 추가연구가 필요하다고 사료된다. This study was to investigate the relation between maxillofacial trauma experience and temporomandibular disorder prevalence with a view to helping prevent and cure temporomandibular dysfunctions by conducting a questionnaire survey with 370 students attending C Health Care College located in Ulsan Metropolis. Data collected underwent an analysis using SPSS program, resulting in the following:1. As for TMJ(temporomandibular joint) clicking prevalence rate, with 25.7% of male students and 22.7% of female students answering positively, the former showed higher rate of temporomandibular joint clicking (p<0.01), while no significant difference was identified depending on school years. 2. In terms of temporomandibular pain prevalence rates, females were found to have been more affected than male students. 3. When it comes to trismus prevalence rates, 10.8% of female students and 7.0% of male students responded they had experienced the dysfunction and female students showed slightly higher rate of trismus prevalence. 4. 6.5% of males and 4.3% of female students responded they had got treatment experience resulting from temporomandibular disorders, indicating that more male students had gone through treatment for temporomandibular disorders(p<0.05). 5. Male students showed higher experience rate of maxillofacial trauma(p<0.01), mostly due to falling or tumbling down, followed by exercises and etc. 6. The relation between maxillofacial trauma and temporomandibular disorders showed statistically significant relation between maxillofacial trauma and TMJ(temporomandibular joint) clicking (p<0.01).