Temporomandibular disorders and occlusion effect on orthodontic treatment (original) (raw)
Related papers
Malocclusion and the need for orthodontic treatment in patients with temporomandibular dysfunction
PubMed, 2007
Objective: The aim of the study was to investigate the signs and symptoms of temporomandibular disorders (TMD) as well as the relationships between TMD, malocclusion and the need for orthodontic treatment. Material and methods: Forty consecutive patients (36 F, 4 M) with a median age of 35 (IQR 18) years. Eighteen patients had Class I, 22 patients Class II malocclusion. A rating scale for the influence of TMJ pain/discomfort on the activities of daily living (ADL) was used simultaneously with clinical examination. Helkimo's Dysfunction Index (D(i)) and the Index of Orthodontic Treatment Need (IOTN) were determined for each participant. Results: Pain/discomfort in the TMJ area was positively correlated with interferences in laterotrusion (p=0.021), pain on palpation over the posterior aspects of TMJ (p=0.012) and pain in the masticatory muscles (p=0.023). The impact of TMJ pain/discomfort was greatest on the performance of a yawn and on opening the mouth wide. There was no statistically significant correlation between malocclusion, D(i)and IOTN. A comparison of Class I malocclusion patients to those with Class II malocclusion revealed no statistically relevant differences in Di and ADL. Conclusion: In patients with malocclusion, pain from TMJ has a significant negative impact on activities of daily living. No significant differences were observed between Angle Class I and Class II groups of patients with respect to TMD. Orthodontic treatment was required for both groups.
Relationship between Orthodontics and Temporomandibular Disorders
Since the end of the 20 th century, the problems of the temporomandibular disorders (TMDs) have aroused interest to the orthodontists. The aim of this literature review is to present the contemporary evidence concerning the association between the presence of malocclusions and the occurrence of signs and symptoms of the TMJ. In addition, additional variables, which may affect the TMJs of a patient during the orthodontic treatment are pointed out. It is evident that there is an increased number of patients who are seeking for orthodontic treatment, not only in order to enhance their facial aesthetics and the function of mastication system, but also to relieve the symptoms of the temporomandibular joint (TMJ). There are multiple etiological factors that have been associated with the TMDs and they may be manifested by pain and/or sounds of TMJ. In addition, during the clinical examination it can be detected a deviation from the normal function of the mandible.
Relationship Between Orthodontics and Temporomandibular Disorders: A Prospective Study
Journal of oral & facial pain and headache, 2016
To investigate the possible relationship between the orthodontic treatment of Class II malocclusion and the development of temporomandibular disorders (TMD). A total of 40 patients was evaluated at four time points: the day before the start of treatment employing bilateral Class II elastics (baseline), as well as at 24 hours, 1 week, and 1 month after the start of treatment. The development of TMD pain complaints in the orofacial region and changes in the range of mouth opening were assessed at these times. Shapiro-Wilk, McNemar, and Friedman tests with 5% significance level were used to analyze the data. The treatment produced pain of a transitory, moderate intensity, but there was no significant change from baseline after 1 month. There were no restrictions in the range of jaw motion or any evidence of limitations in mouth opening. Orthodontic treatment with bilateral Class II elastics does not cause significant orofacial pain or undesirable changes in the range of mouth opening. ...
The role of orthodontics in temporomandibular disorders
Journal of Oral Rehabilitation, 2010
Temporomandibular Disorder (TMD) is the main cause of pain of non-dental origin in the oro-facial region including head, face and related structures. The aetiology and the pathophysiology of TMD is poorly understood. It is generally accepted that the aetiology is multifactorial, involving a large number of direct and indirect causal factors. Among such factors, occlusion is frequently cited as one of the major aetiological factors causing TMD. It is well known from epidemiologic studies that TMD-related signs and symptoms, particularly temporomandibular joint (TMJ) sounds, are frequently found in children and adolescents and show increased prevalence among subjects between 15 and 45 years old. Aesthetic awareness, the development of new aesthetic orthodontic techniques and the possibility of improving prosthetic rehabilitation has increased the number of adults seeking orthodontic treatment. The shift in patient age also has increased the likelihood of patients presenting with signs and symptoms of TMD. Because orthodontic treatment lasts around 2 years, orthodontic patients may complain about TMD during or after treatment and orthodontists may be blamed for causing TMD by unsatisfied patients. This hypothesis of causality has led to legal problems for dentists and orthodontists. For these reasons, the interest in the relationship between occlusal factors, orthodontic treatment and TMD has grown and many studies have been conducted. Indeed, claims that orthodontic treatment may cause or cure TMD should be supported by good evidence. Hence, the aim of this article is to critically review evidence for a possible association between malocclusion, orthodontic treatment and TMD.
Effect of Orthodontic Treatment on Temporomandibular Joint. A Review
2020
Introduction: The morphology of temporomandibular joint varies among individuals and the most important factor that could affect its shape is functional load impacted on it. This depends on the closed association between the morphology and function which demonstrates that presumed differences in condyle-fossa position and morphology among subjects vary with different types of malocclusion. The objective of this literature review is to determine the temporomandibular joint characteristics in response to orthodontic treatment. Materials and Methods: A web-based search was carried out using electronic databases such as PubMed, Science Direct and Google scholar between the year 2007 to 2017 with a focus on longitudinal studies, Prospective, Casecontrol, Retrospective and Randomized Controlled Trials. Results: 60 studies were searched in which 21 articles have been selected based on inclusion criteria. Among these studies, 2 were randomized controlled trials, 15 were prospective longitud...
Assessment of temporomandibular disorder and occlusion in treated class III malocclusion patients
Journal of Applied Oral Science, 2007
The aims of this study were to compare the prevalence of temporomandibular disorders (TMD) in individuals submitted to either orthodontic or ortho-surgical Class III malocclusion treatment and to assess the influence of occlusal aspects on TMD severity. Material and methods: The sample consisted of 50 individuals divided into two groups, according to the type of treatment (orthodontic or orthodontic with orthognathic surgery). The presence of signs and symptoms of TMD was evaluated by an anamnestic questionnaire and a clinical examination, including TMJ and muscle palpation, active mandibular range of motion, joint noises and occlusal examination. Results: Based on the anamnestic questionnaire, 48% had no TMD, 42% had mild TMD and 10% had moderate TMD. The presence and severity of TMD did not show any relationship with the type of orthodontic treatment (p>0.05). The chi-square test showed a positive association (p<0.05) between TMD and nonworking side occlusal interferences. Conclusion: Based on the methodology used and the results obtained, it may be concluded that Class III orthodontic treatment was not associated with the presence of TMD signs and symptoms and the non-working side contacts can be occlusal factors of risk. There was no significant difference in TMD prevalence between the studied groups (orthodontically treated patients and patients treated with orthodontics followed by orthognathic surgery).
In recent years the number of patients with temporomandibular disorders (TMD) is on the rise, given this, this paper aims to investigate the prevalence of jaw and temporomandibular disorders and its relationship with malocclusions in children. Methods: This study was conducted as a review article. The study is of descriptive -library type in which by referring to all the resources and literature of the existing studies, their results have been summed up. Results: Temporomandibular disorders or TMD is referred to clinical problems that involve masticatory muscles, temporomandibular joints, or both of them. Its prevalence is 12 to 20% and including subclinical symptoms it reaches to 65 percent. Common Age is reported to be between 20 and 40 years and its prevalence is higher in women. Conclusion: The most common symptoms are masticatory muscle pain, and the most common cause of it is premature contacts. Its treatment includes two phases, first phase includes reducing anxiety, medication and physiotherapy and the second phase involves orthodontic treatment.
Quintessence international (Berlin, Germany : 1985), 2015
The hypothesis that dental malocclusions may be a risk factor for temporomandibular disorders (TMD) has been greatly debated in the literature. Whilst the association between features of dental occlusion and TMD has been proven weak, if existing, it seems that the transfer of such knowledge into clinical practice is yet to be completed. This study evaluated the prevalence of static and dynamic malocclusion features in a population of TMD patients and compared it with literature data on the general population. A total of 625 consecutive TMD patients (75% female; aged 34.2 ± 6.7 years, range 25-44 years) were examined and were clustered into four groups on the basis of pain absence (ie, disk displacement and/or arthrosis without pain), or pain presence within the muscles and/or the temporomandibular joint (TMJ). As for the occlusal features, posterior crossbite, excessive overbite, anterior open bite, excessive overjet, and molar and canine asymmetry were recorded as static malocclusi...
Objectives Structural variations of the temporomandibular joint (TMJ) will affect orthodontic treatment. So we analyzed common issues of TMJ structure among patients with different types of malocclusions. Methods 312 orthodontic pretreatment patients were randomly selected as subjects. Conventional anteroposterior and lateral cephalometric radiographs, panoramic radiographs, TMJ magnetic resonance images were obtained and the subjects’ TMJ structures were assessed. Results Among all the 312 pretreatment patients, 206 patients (66.03%) presented with TMJ structural variations, and for male patient Class I patients, 72.97% of skeletal Class II patients, 64.04% of skeletal Class III patients. Horizontal analysis indicated that a varied TMJ structure was present in 78.18% of patients with mandibular deviation to the left, 60.87% of patients without mandibular deviation, 85.19% of patients with mandibular deviation to the right. Vertical analysis revealed that a varied TMJ structure was present in 77.12% of high-angle patients, 56.88% of average-angle patients, 70.59% of low-angle patients. Conclusions TMJ structural variations were present in a high proportion of orthodontic pretreatment patients. Although most of these patients did not present clinical symptoms, orthodontists should pay more attention to such potential risk.
Orthodontics is temporomandibular disorder–neutral
The Angle Orthodontist, 2015
Objectives: To assess if subjects with a clinical diagnosis of temporomandibular disorders (TMDs) have a similar prevalence of orthodontic history as a population of TMD-free individuals and to assess if those subjects who have a history of ideal orthodontics have fewer symptoms than those with a history of nonideal orthodontics. Materials and Methods: Two groups of age- and sex-matched individuals belonging to either a study (“TMD”) or a control group were recruited. Subjects who underwent orthodontic treatment were classified as having a history of ideal or nonideal orthodontics based on the current presence of normal values in five reference occlusal features. Results: The correlation with a history of orthodontic treatment was not clinically significant for any of the TMD diagnoses (ie, muscle pain, joint pain, disc displacement, arthrosis), with Phi (Φ) coefficient values within the −0.120 to 0.058 range. Within the subset of patients with a history of orthodontics, the corr...