The Prevalence of Temporomandibular Disorders and Dental Attrition Levels in Patients with Posterior Crossbite and/or Deep Bite: A Preliminary Prospective Study

Background. The prevalence of various temporomandibular disorders (TMD) and the severity of attrition in patients with either bilateral or unilateral deep bite and/or posterior crossbite has not been established, nor has the effect of one year of orthodontic treatment on TMD. Methods. Of 310 patients presenting with suspected TMD, 160 were diagnosed with various TMD and 150 were TMD-free. Diagnosis was according to the Axis I of the Diagnostic Criteria for TMD. All participants underwent a dental examination, and 100 patients were reevaluated after one year of orthodontic treatment. Fisher’s exact test and the proportion test with Bonferroni’s correction were used for the categorical univariate analysis. Results. There was a significant association ( P < 0.001 ) between deep bite and dental attrition (wear), but not between crossbite and/or deep bite in patients diagnosed with either painful TMD or disc displacement. The risk of sustaining painful TMD when crossbite presented simultaneously on the anterior and the posterior dentition was 2.625-fold greater than when it presented with a normal bite, although this difference was not significant ( P = 0.286 ) due to the lack of statistical power. There was no significant sex-related association between the occurrence of either painful TMD or disc displacement. A reduction in TMD findings was demonstrated after one year of treatment, but no statistical power was reached due to the small sample size. Conclusions. Deep bite may be related to dental wear but not to pain from TMD and/or disc displacement. Only crossbite that presents simultaneously on the anterior and the posterior dentition (mixed X-bite) may have some effect on the level of pain in TMD, but not on in the prevalence of disc displacement. Confirmation of these conclusions by well-designed studies on larger patient groups is warranted. There was a clinically significant improvement in TMD findings after one year of treatment.

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Determining Risk Factors for the Development of Temporomandibular Disorders during Orthodontic Treatment

Applied Sciences ◽

10.3390/app10228216 ◽

2020 ◽

Vol 10 (22) ◽

pp. 8216

Author(s):

Alessandro Ugolini ◽

Federico Garbarino ◽

Luca Di Vece ◽

Francesca Silvestrini-Biavati ◽

Valentina Lanteri

Keyword(s):

Risk Factors ◽

Temporomandibular Disorders ◽

Orthodontic Treatment ◽

Complex Disease ◽

Myofascial Pain ◽

Significant Risk ◽

Female Gender ◽

Structured Interview ◽

Disc Displacement ◽

One Year

Temporomandibular disorders (TMD) represent a complex disease with a multifactorial etiology. Despite several studies on the subject, a causal relationship between orthodontic treatment and different forms of TMD has not been established. The aim of this study was to analyze the effect of orthodontic treatment on two aspects of TMD: myofascial pain and disc displacement. This retrospective cohort study followed 224 orthodontic adult patients at three points in time: before treatment (T0), immediately after treatment (T1), and one year after treatment (T2). Disc displacement and myofascial pain were evaluated through a clinical assessment and with a semi-structured interview, along with headache, neck, and shoulder pain parameters and behavioral and somatic accompanying symptoms. Multivariate logistic regression was used to identify risk factors that could influence the development of TMD in these patients. There was a non-significant increase in disc displacement during orthodontic treatment, which mostly resolved after completion of treatment. Myofascial pain scores worsened during treatment, but improved when compared with the baseline once treatment was complete (T0 = 51.3%, T1 = 64.6%, T2 = 44.9%). Female gender (aOR = 1.9, CI 95%, 1.23–2.36), the presence of somatic symptoms (aOR = 3.6, CI 95%, 2.01–5.84), and symptoms of anxiety or depression (aOR = 2.2, CI 95%, 1.14–4.51) were significant risk factors associated with the development of TMD. There is a low and not significant risk of TMD development during orthodontic treatment. When TMD occurred, they resolved within 1 year of the end of treatment.

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Orthodontics is temporomandibular disorder–neutral

The Angle Orthodontist ◽

10.2319/051015-318.1 ◽

2015 ◽

Vol 86 (4) ◽

pp. 649-654 ◽

Cited By ~ 20

Author(s):

Daniele Manfredini ◽

Edoardo Stellini ◽

Antonio Gracco ◽

Luca Lombardo ◽

Luca Guarda Nardini ◽

...

Keyword(s):

Temporomandibular Disorders ◽

Joint Pain ◽

Orthodontic Treatment ◽

Normal Values ◽

Temporomandibular Disorder ◽

Control Group ◽

Disc Displacement ◽

History Of ◽

Clinically Significant ◽

Age And Sex

ABSTRACT 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 correlation of ideal or nonideal orthodontic treatment with TMD diagnoses was, in general, not clinically relevant or was weakly relevant. Conclusions: Findings confirmed the substantial absence of clinically significant effects of orthodontics as far as TMD is concerned. The very low correlation values of a negative or positive history of ideal or nonideal orthodontics with the different TMD diagnoses suggest that orthodontic treatment could not have a true role for TMD.

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Mesioangulation of mandibular second molars: A case report

Journal of Orthodontics ◽

10.1177/14653125211017149 ◽

2021 ◽

pp. 146531252110171

Author(s):

Silvio Augusto Bellini-Pereira ◽

Maria Pia Seminario ◽

Rodrigo Naveda ◽

José Fernando Castanha Henriques ◽

Daniela Garib ◽

...

Keyword(s):

Case Report ◽

Orthodontic Treatment ◽

Upright Position ◽

Second Molar ◽

Posterior Crossbite ◽

Simple Alternative ◽

Aesthetic Results ◽

Mandibular Second Molar ◽

One Year ◽

The Right

This case report describes a simple alternative for treatment of mesioangulation of mandibular second molars. An 11-year-old girl was diagnosed with unilateral posterior crossbite, moderate incisor crowding and mesioangulation of the right mandibular second molar. The ectopic second molar was uprighted using a modified lingual arch with a distal hook and elastic chains. Orthodontic traction began after appliance installation and was activated once per month using 120 g of force. After six months, the right mandibular second molar was in an upright position. Orthodontic treatment continued with teeth levelling and alignment until acceptable occlusal and aesthetic results were achieved. Adequate stability was observed one year after debonding. The modified mandibular lingual arch with a distal hook is a simple and effective alternative to manage mesioangulation of mandibular second molars with minimum adverse effects and stable outcomes.

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Prevalence and change of malocclusions from primary to early permanent dentition: A longitudinal study

The Angle Orthodontist ◽

10.2319/080414-542.1 ◽

2015 ◽

Vol 85 (5) ◽

pp. 728-734 ◽

Cited By ~ 41

Author(s):

Lillemor Dimberg ◽

Bertil Lennartsson ◽

Kristina Arnrup ◽

Lars Bondemark

Keyword(s):

Orthodontic Treatment ◽

Contact Point ◽

Dental Trauma ◽

Permanent Dentition ◽

Open Bite ◽

Anterior Open Bite ◽

Treatment Need ◽

Deep Bite ◽

Posterior Crossbite ◽

New Development

ABSTRACT Objective: To follow a group of children from primary to early permanent dentition and determine the prevalence, self-correction, and new development of malocclusions; the need for orthodontic treatment; and the possible influences of habits, breathing disturbances, and allergies. Materials and Methods: Two hundred and seventy-seven children were followed at 3, 7, and 11.5 years of age. Malocclusions and orthodontic treatment need were determined by clinical examinations. Data on sucking habits, breathing disturbances, allergies, dental trauma, and orthodontic treatments were collected from a questionnaire and dental records. Results: Malocclusions were found in 71% of participants at 3 years of age, 56% at 7 years of age, and 71% at 11.5 years of age. Self-correction was noted for anterior open bite, sagittal malocclusions, and posterior crossbite, while deep bite developed. A high number of contact point displacements and spacings contributed to the prevalence of malocclusion rate of 71% at 11.5 years. Severe or extreme orthodontic treatment need was apparent in 22%. Habits, allergies, or breathing disturbances found at 3 years of age had no associations with malocclusions at 11.5 years of age. Conclusions: This sample revealed a significant percentage of malocclusions and orthodontic treatment need. A substantial number of self-corrections and establishment of new malocclusions occurred during the transition from primary to early permanent dentition.

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Association between posterior crossbite and/or deep bite and temporomandibular disorders among Palestinian adolescents: A sex comparison

CRANIO® ◽

10.1080/08869634.2019.1574962 ◽

2019 ◽

Vol 39 (1) ◽

pp. 29-34 ◽

Cited By ~ 2

Author(s):

Naser Azmi Rushdi Khayat ◽

Nir Shpack ◽

Alona Emodi Perelman ◽

Pessia Friedman-Rubin ◽

Reem Yaghmour ◽

...

Keyword(s):

Temporomandibular Disorders ◽

Deep Bite ◽

Posterior Crossbite

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Posterior crossbite and temporomandibular disorders (TMDs): need for orthodontic treatment?

European Journal of Orthodontics ◽

10.1093/ejo/cjr095 ◽

2011 ◽

Vol 34 (6) ◽

pp. 667-673 ◽

Cited By ~ 28

Author(s):

B. Thilander ◽

K. Bjerklin

Keyword(s):

Temporomandibular Disorders ◽

Orthodontic Treatment ◽

Posterior Crossbite

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Importance of stability and retention of double total prostheses: factors related to its use in the etiology of temporomandibular disorders

Brazilian Dental Science ◽

10.14295/bds.2016.v19i1.1153 ◽

2016 ◽

Vol 19 (1) ◽

pp. 55 ◽

Cited By ~ 1

Author(s):

Letícia De Souza Renhe ◽

Jean Soares Miranda ◽

Natália Veloso Malta ◽

Isabel Cristina Gonçalves Leite ◽

Fabiola Pêssoa Pereira Leite

Keyword(s):

Temporomandibular Joint ◽

Temporomandibular Disorders ◽

Facial Pain ◽

Temporomandibular Disorder ◽

Statistical Significance ◽

Disc Displacement ◽

Temporomandibular Joint Dysfunction ◽

Temporomandibular Joint Dysfunction Syndrome ◽

Axis I ◽

School Of Dentistry

Objective: Evaluate the prevalence of Temporomandibular Disorder in patients with full double prosthesis. Material and Methods: The sample was composed of 40 volunteer patients, aged between 34 and 92 years, with upper and lower dentures, assisted at the Total Prosthodontics Clinic of the School of Dentistry at the Federal University of Juiz de Fora. Patients were evaluated by a single trained examiner and the diagnosis of TMD was established from the axis I of the RDC/TMD. Results: The prevalence of TMD in the sample was 42.5%, and most patients were female. Although there was no statistical significance between the time of use of the prosthesis and the presence of TMD was found, there was a correlation between time without use of prosthesis and the presence of disc displacement. Conclusion: According to the methodology applied and the results of this study, it can be concluded that there was a considerable prevalence of TMD in patients with double dentures, but there was no correlation between the use of full and DTM prosthesis.Keywords: Facial Pain; Temporomandibular Joint Dysfunction Syndrome; Complete Denture.

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Depressive Traits and Theory of Mind in Healthy Individuals: A Mediation Study

10.31237/osf.io/ndjcr ◽

2018 ◽

Author(s):

Nicholas James Rowark

Keyword(s):

Theory Of Mind ◽

Executive Functions ◽

Executive Control ◽

Statistical Power ◽

Social Cognitive ◽

Clinical Sample ◽

Small Sample ◽

Future Research ◽

Healthy Individuals ◽

Prepotent Response

Depression has been associated with poor social cognitive functioning, including impaired performance on measures of theory of mind. However, the association between depression and theory of mind performance has been removed when controlling for differences in executive functioning, which is also impacted by depression. Among these executive functions, inhibition of prepotent response has been demonstrated as enabling success on theory of mind tests. In the context of these findings, the current investigation tested whether a relationship could be found between depressive traits and theory of mind in a non-clinical sample, and whether this relationship was mediated by differences in executive control of inhibition. Theory of mind was assessed in 31 healthy individuals using an audio-presented false-belief reasoning task, which also tested baseline performance in non-mental-state reasoning. Inhibition of prepotent response was assessed with interference measures on a Stroop colour-word task, and depressive traits were self-reported through the second version of the Beck Depression Inventory. Mediation analysis revealed that executive control of inhibition did not significantly mediate an indirect effect of depressive traits on theory of mind. It was interpreted that relationships previously found between major depression, executive and social-cognitive functions do not generalise beyond clinical boundaries. However, these findings are discussed in terms of the small sample size, limiting statistical power, and several methodological limitations. Future research should assess the relationship between depressive traits and theory of mind using alternative measures of mental representation, or include a neurocognitive battery assessing executive functions other than inhibition.

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Relationship between Expanded Disability Status Scale scores and the presence of temporomandibular disorders in patients with multiple sclerosis

European Journal of Dentistry ◽

10.4103/ejd.ejd_91_17 ◽

2018 ◽

Vol 12 (01) ◽

pp. 144-148 ◽

Cited By ~ 2

Author(s):

Lucas Senra Correa Carvalho ◽

Osvaldo José Moreira Nascimento ◽

Luciane Lacerda Franco Rocha Rodrigues ◽

Andre Palma Da Cunha Matta

Keyword(s):

Multiple Sclerosis ◽

Temporomandibular Disorders ◽

Control Group ◽

Expanded Disability Status Scale ◽

Exact Test ◽

Disability Status ◽

Relapsing Remitting ◽

Scale Scores ◽

Axis I ◽

Relapsing Remitting Multiple Sclerosis

ABSTRACTObjectives: The objectives of this study were to assess the prevalence of temporomandibular disorders (TMDs) in patients with relapsing-remitting multiple sclerosis (MS) and to investigate whether an association exists between the presence of TMD symptoms and the degree of MS-related disability. Materials and Methods: In all, 120 individuals were evaluated: 60 patients with a diagnosis of relapsing-remitting MS and 60 age- and sex-matched controls without neurological impairments. A questionnaire recommended by the European Academy of Craniomandibular Disorders for the assessment of TMD symptoms was administered. For those who answered affirmatively to at least one of the questions, the RDC/TMD Axis I instrument was used for a possible classification of TMD subtypes. The Expanded Disability Status Scale (EDSS) was the measure of the degree of MS-related disability. Statistical Analysis Used: Fisher’s exact test was used to analyze the data. ANOVA was used to detect significant differences between means and to assess whether the factors influenced any of the dependent variables by comparing means from the different groups. Results: The prevalence of TMD symptoms in patients with MS was 61.7% versus 18.3% in the control group (CG). A diagnosis of TMD was established for 36.7% in the MS group and 3.3% in the CG (P = 0.0001). There were statistically significant differences between degrees of MS-related disability and the prevalence of TMD (P = 0.0288). Conclusions: The prevalence of both TMD and TMD symptoms was significantly greater in the MS group. EDSS scores and TMD prevalence rates were inversely related.

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Orthodontic Treatment and Craniocervical Posture in Patients with Temporomandibular Disorders: An Observational Study

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18063295 ◽

2021 ◽

Vol 18 (6) ◽

pp. 3295

Author(s):

Maria Paço ◽

José Alberto Duarte ◽

Teresa Pinho

Keyword(s):

Temporomandibular Disorders ◽

Orthodontic Treatment ◽

Hyoid Bone ◽

Craniofacial Morphology ◽

P Value ◽

Skeletal Class ◽

Treatment Data ◽

Phase Data ◽

Condylar Displacement ◽

Clinical Records

Orthodontic treatment acts through the application of forces and/or by stimulating and redirecting the functional forces within the craniofacial complex. Considering the interrelationship between craniomandibular and craniocervical systems, this intervention may alter craniocervical posture. Thus, our aim is to (a) compare craniocervical posture, hyoid bone position, and craniofacial morphology before, after, and also in the contention phase at least one year after the orthodontic treatment, in patients with temporomandibular disorders and (b) to verify whether the presence of condylar displacement, the skeletal class, or the facial biotype interferes with the abovementioned outcomes. To do so an observational, analytical, longitudinal, and retrospective design study was carried out. A non-probabilistic convenience sampling method was applied. The sample consisted of clinical records of patients diagnosed with temporomandibular disorders in order to compare pre-orthodontic treatment with post-orthodontic treatment (n = 42) and contention phase data (n = 26). A cephalometric analysis of several variables was performed. The p-value was set as 0.05. When the pre- and post-orthodontic treatment data were analyzed, there were statistically significant changes in variables concerning craniocervical posture (CV angle, C0-C1, and AA-PNS) and also concerning hyoid bone position (C3-Rgn). When pre- and post-orthodontic treatment and contention phase data were analyzed the variables concerning craniocervical posture (C0-C1, CVT/Ver, NSL/OPT, NSL/CVT, NSL/Ver; OPT/CVT, OPT/Ver) and facial biotype had statistically significant changes. This allowed us to conclude that in the sample studied, there were significant differences regarding hyoid bone position (pre- versus post-orthodontic treatment) and craniocervical posture (pre- versus post-orthodontic versus contention), with the craniocervical posture being prone to return to basal values. The presence of condylar displacement was found to significantly increase the H-H1 distance in the three moments of evaluation. Facial biotype was found to significantly increase the NSL/Ver angle on hypodivergent compared to hyperdivergent in the contention phase.

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