scholarly journals Roentgencraniometric analysis of the angular craniofacial dimensions in subjects with temporomandibular disorders

2007 ◽  
Vol 135 (5-6) ◽  
pp. 269-274
Author(s):  
Slobodan Dodic ◽  
Miroslav Vukadinovic ◽  
Vladimir Sinobad
Keyword(s):  
Temporomandibular Disorders ◽  
Growth And Development ◽  
Muscular Activity ◽  
Signs And Symptoms ◽  
Control Group ◽  
Craniofacial Skeleton ◽  
Physiological Strain ◽  
Skeletal Class ◽  
Class 1 ◽  
Natural Dentition

Introduction: Anomalies in growth and development of the craniofacial skeleton, particularly of vertical dysplasia, may be accompanied by distinct signs and symptoms of temporomandibular disorders. Vertical dysplasia followed by numerous occlusal disturbances alters muscular activity resulting in non-physiological strain on articular structures and their remodelling. Objective. The purpose of this study was to evaluate a possible assocciation between certain morphologic features of the craniofacial skeleton and the presence of signs and symptoms of temporomandibular disorders in young adults with preserved natural dentition. Method. The investigation was carried out on 30 lateral cephalometric radiographs made of 30 subjects with signs and symptoms of temporomandibular disorders. According to the values of the ANB angle (Steiner cephalometric analysis), all subjects were classified in the skeletal class 1.The control group consisted of 50 lateral cephalometric radiographs made of subjects with the skeletal class 1 without signs and symptoms of temporomandibular disorders. The roentgencraniometric analysis of lateral cephalometric radiographs included the evaluation of 20 angular dimensions. Results. The result of this study points at significant differences between the Bolton standards and the following angular dimensions in subjects with temoromandibular disorders:(S-Na)-Pg, (B-Na)-Pg, (Pns-Ans)-(Go-Gn), Occl-i, (S-Na)-i, (S-Na)-(Go-Me), (Go-Me)-i, SNB. The comparative analysis between the subjects of the experimental and the control group revealed significant differences in the values of the following angular dimensions: OccP-(Go-Po) i (S-N)-(Go-Me) at the level of p<0.001. Conclusion. The values of the analyzed angular dimensions in both subjects of the experimental and the control group show significant differences when related to the same angular dimensions in the Bolton standards. This can be explained by specific morphologic features of the craniofacial skeleton in subjects of our population. Small number of significant differences in the values of the examined angular variables between the subjects with signs and symptoms of temporomandibular disorders and subjects without such signs/symptoms can be explained by the fact that the study included young persons with the skeletal class 1 jaw relationships and relatively harmonious relations within the orofacial complex. .

scholarly journals Roentgencraniometric evaluation of the craniofacial dimensions in subjects with symptoms of temporomandibular disorders

2006 ◽  
Vol 63 (9) ◽  
pp. 793-799
Author(s):  
Slobodan Dodic ◽  
Miroslav Vukadinovic ◽  
Vladimir Sinobad
Keyword(s):  
Temporomandibular Disorders ◽  
Control Group ◽  
Cephalometric Analysis ◽  
Craniofacial Skeleton ◽  
Male And Female ◽  
Skeletal Class ◽  
Linear Dimensions ◽  
Class 1 ◽  
Young Subjects ◽  
Craniometric Analysis

Background/aim: The aim of this study was to evaluate the possible association between certain morphologic features of the craniofacial skeleton and the presence of symptoms of temporomandibular disorders in young subjects with natural dentitions. Methods. The investigation was carried out on 80 lateral cephalometric radiographs of two groups of male and female subjects between 18 and 25 years of age with natural dentitions. The analysed group consisted of 30 subjects with symptoms of temporomandibular disorders, and the control group of 50 subjects without such symptoms. According to the values of the ANB angle (position of the maxilla with the mandible- Steiner cephalometric analysis) all subjects were classified in the skeletal class 1. The roentgen craniometric analysis of cephalometric radiographs included the evaluation of 25 linear dimensions which values were compared between the examined groups and with the values of the same dimensions in the Bolton standards for 18 years of age. Results. The results of this study confirmed the presence of significant differences between the examined linear dimensions in the Bolton standards and the same dimensions measured in the subjects of the analyzed and the control group. The comparative analysis of these values between the groups confirmed the presence of significant differences in following linear dimensions at the level of p<0,00: S - Cs(Go), Mol - PP, Mol - MP and Ar - Go. Conclusion. Significant differences between the examined linear dimensions measured in the subjects included in this study and the same dimensions in the Bolton standards can be explained by specific morphologic features of the craniofacial skeleton in people of our population. Within the limitation of this study, the minor differences in the values of the examined linear variables between the subjects of the experimental and the control group can not be accepted as indicators of disturbed function of the orofacial system.

scholarly journals Effect of Occlusal Splints on the Temporomandibular Disorders, Dental Wear and Anxiety of Bruxist Children

2011 ◽  
Vol 05 (04) ◽  
pp. 441-450 ◽  
Author(s):  
Claudia C Restrepo ◽  
Isabel Medina ◽  
Patiñob Isabel
Keyword(s):  
Temporomandibular Disorders ◽  
Mouth Opening ◽  
Signs And Symptoms ◽  
Mixed Dentition ◽  
Control Group ◽  
Parent Rating ◽  
Dental Wear ◽  
Occlusal Splints ◽  
Significant Difference ◽  
Experimental Group

ABSTRACTObjectives: To evaluate the effectiveness of occlusal splints to reduce the signs and symptoms of temporomandibular disorders (TMD), dental wear and anxiety in a group of bruxist children. Methods: All of the subjects were 3 to 6 years old, had complete primary dentition, class I occlusion and were classified as bruxist according to the minimal criteria of the ICSD for bruxism. For each child, anxiety was evaluated with the Conners’ Parent Rating Scales (CPRS). The TMD were evaluated using the RDC/TMD. The dental wear was processed in digital format with Mat Lab® and Lab view® software to determine its size and form. The children were randomized into an experimental (n=19) and a control (n=17) group. The children in the experimental group used rigid bite plates for a two-year period, until mixed dentition. Afterwards, the CPRS and the RDC/TMD were applied again and dental casts were taken. Comparisons of the variables regarding dental wear, signs and symptoms of TMD and anxiety before and after treatment among the groups were analyzed using the t-test, the Wilcoxon rank sum test and the Mann-Whitney test. Results: The subjects in the experimental group showed no statistically significant difference regarding anxiety levels and dental wear when compared with the control group. The signs and symptoms of TMD were not reduced except for the deviation in mouth opening. Conclusions: The use of rigid occlusal bite plates was not efficient in reducing the signs of bruxism as a whole but did reduce the deviation in mouth opening. (Eur J Dent 2011;5:441-450)

scholarly journals Maximal bite force in young adults with temporomandibular disorders and bruxism

2007 ◽  
Vol 21 (3) ◽  
pp. 278-283 ◽  
Author(s):  
Raquel Aparecida Pizolato ◽  
Maria Beatriz Duarte Gavião ◽  
Giédre Berretin-Felix ◽  
Ana Claudia Martins Sampaio ◽  
Alceu Sergio Trindade Junior
Keyword(s):  
Young Adults ◽  
Temporomandibular Disorders ◽  
Influencing Factor ◽  
Clinical Signs ◽  
Signs And Symptoms ◽  
Bite Force ◽  
Control Group ◽  
Exact Test ◽  
Waking Up ◽  
Structured Questionnaire

Parafunctional habits, such as bruxism, are contributory factors for temporomandibular disorders (TMD). The aim of this study was to evaluate the maximal bite force (MBF) in the presence of TMD and bruxism (TMDB) in young adults. Twelve women (mean age 21.5 years) and 7 men (mean age 22.4 years), composed the TMDB group. Ten healthy women and 9 men (mean age 21.4 and 22.4 years, respectively) formed the control group. TMD symptoms were evaluated by a structured questionnaire and clinical signs/symptoms were evaluated during clinical examination. A visual analogical scale (VAS) was applied for stress assessment. MBF was measured with a gnatodynamometer. The subjects were asked to bite 2 times with maximal effort, during 5 seconds, with a rest interval of about one minute. The highest values were considered. The data were analyzed with Shapiro-Wilks W-test, descriptive statistics, paired or unpaired t tests or Mann-Whitney tests when indicated, and Fisher's exact test (p < 0.05). TMDB women presented lower values of MBF as compared to those presented by TMDB men and by the control group. MBF for TMDB men was similar to that of the control group. The proportion of TMDB women with muscle pain and facial/teeth/head pain upon waking up was significantly higher than that of men. Control women presented significantly lower stress scores than the others. It was concluded that MBF was reduced in TMDB women, as they presented more signs and symptoms. Men presented higher MBF values than women, but TMD and bruxism did not significantly decrease MBF. Stress was not an influencing factor for TMD and bruxism in men.

scholarly journals TMD in Consecutive Patients Referred for Orthognathic Surgery

2009 ◽  
Vol 79 (4) ◽  
pp. 621-627 ◽  
Author(s):  
Cecilia Abrahamsson ◽  
Ewa Carin Ekberg ◽  
Thor Henrikson ◽  
Maria Nilner ◽  
Bo Sunzel ◽  
...  
Keyword(s):  
Patient Group ◽  
Temporomandibular Disorders ◽  
Orthognathic Surgery ◽  
Null Hypothesis ◽  
Myofascial Pain ◽  
Maxillofacial Surgery ◽  
Signs And Symptoms ◽  
University Hospital ◽  
Health Clinic ◽  
Control Group

Abstract Objective: To answer the question whether temporomandibular disorders (TMD) were more common in a group of individuals referred for orthognathic surgery than in a control group. The null hypothesis was that neither the frequency of signs and symptoms of TMD or diagnosed TMD would differ between the patient group and a control group. Materials and Methods: A sample of 121 consecutive patients referred for orthognathic surgery at the Department of Oral Maxillofacial Surgery, Malmö University Hospital, Sweden, was interviewed and examined regarding signs and symptoms of TMD and headaches. A control group was formed by 56 age- and gender-matched individuals attending the Department of Oral Diagnosis, Faculty of Odontology, Malmö University, Sweden, and Public Dental Health Clinic in Oxie, County of Skane, Sweden. TMD diagnoses were used according to Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD). Results: The patient group showed more myofascial pain without limited opening, disc displacement with reduction, and arthralgia according to RDC/TMD than the control group. The patient group also had more symptoms and signs of TMD in general. Conclusions: The null hypothesis was rejected because patients who were to be treated with orthognathic surgery had more signs and symptoms of TMD and higher frequency of diagnosed TMD compared with the matched control group.

scholarly journals Evaluation of the signs and symptoms of temporomandibular disorders in children with headaches

2007 ◽  
Vol 65 (2A) ◽  
pp. 251-255 ◽  
Author(s):  
Fernanda Mara de Paiva Bertoli ◽  
Sérgio A. Antoniuk ◽  
Isac Bruck ◽  
Guilherme R.P. Xavier ◽  
Danielle C.B. Rodrigues ◽  
...  
Keyword(s):  
Temporomandibular Disorders ◽  
Pediatric Patients ◽  
Emotional State ◽  
Subjective Evaluation ◽  
Mouth Opening ◽  
Signs And Symptoms ◽  
Control Group ◽  
Dental Examination ◽  
Significant Difference ◽  
Structured Questionnaire

PURPOSE: The purpose of this study was to evaluate the presence of signs and symptoms of temporomandibular disorders (TMD) in children with headaches in a neuropediatric ambulatory. METHOD: Fifty patients between 4 and 18 years of age were examined: 31 had headaches (24 migraine, 4 tension type and 3 unspecific headache) and 19 formed the control group. The data collection was comprised of a structured questionnaire answered by the children's parents, and a subjective evaluation about the children’s emotional state. A specific questionnaire for TMD was applied, followed by a clinical dental examination of the children. As signs of TMD, mouth opening limitation, mandibular trajectory deviation in opening mouth, and joint noise were considered. As symptoms, pain on palpation of masseter and temporal muscles and on the poromandibular joint. RESULTS: A significant increase in signs and symptoms of TMD was found in patients with headaches when compared to the control group. There was also a significant difference in signs and symptoms of TMD according to age (increased with age) and emotional state (tense> calm). CONCLUSION: There is a higher frequency of TMD in pediatric patients with headaches; thus, it is important to look for TMD signs and symptoms in this population.

scholarly journals Analysis of sagittal condyl inclination in subjects with temporomandibular disorders

2010 ◽  
Vol 67 (5) ◽  
pp. 391-396
Author(s):  
Slobodan Dodic ◽  
Vladimir Sinobad ◽  
Miroslav Vukadinovic
Keyword(s):  
Functional Analysis ◽  
Temporomandibular Disorders ◽  
Signs And Symptoms ◽  
Control Group ◽  
Study Group ◽  
Asymptomatic Subjects ◽  
Mandibular Movements

Bacground/Aim. Disturbances of mandibular border movements is considered to be one of the major signs of temporomandibular disorders (TMD). The purpose of this study was to evaluate the possible association between disturbances of mandibular border movements and the presence of symptoms of TMD in the young. Methods. This study included two groups of volunteers between 18 and 26 years of age. The study group included 30 examineers with signs (symptoms) of TMD, and the control group also included 30 persons without any signs (symptoms) of TMD. The presence of TMD was confirmed according to the craniomandibular index (Helkimo). The functional analysis of mandibular movements was performed in each subject using the computer pantograph. Results. The results of this study did not confirm any significant differences between the values of the condylar variables/sagittal condylar inclination, length of the sagital condylar guidance, in the control and in the study group. Conclusion. The study did not confirm significant differences in the length and inclination of the protrusive condylar guidance, as well as in the values of the sagittal condylar inclination between the subjects with the signs and symptoms of TMD and the normal asymptomatic subjects.

scholarly journals Comparative study of intermaxillary relationships of manual and swallowing methods

2009 ◽  
Vol 20 (1) ◽  
pp. 78-83 ◽  
Author(s):  
Márcia Cristina Alvarez ◽  
Miriam Lacale Turbino ◽  
Celso de Barros ◽  
Valéria Oliveira Pagnano ◽  
Osvaldo Luiz Bezzon
Keyword(s):  
Temporomandibular Disorders ◽  
Lateral Displacement ◽  
Signs And Symptoms ◽  
Control Group ◽  
Inclusion Criteria ◽  
Significance Level ◽  
Posterior Displacement ◽  
Significant Difference ◽  
Irreversible Hydrocolloid ◽  
The Difference

This study compared the mandibular displacement from three methods of centric relation record using an anterior jig associated with (A) chin point guidance, (B) swallowing (control group) and (C) bimanual manipulation. Ten patients aged 25-39 years were selected if they met the following inclusion criteria: complete dentition (up to the second molars), Angle class I and absence of signs and symptoms of temporomandibular disorders and diagnostic casts showing stability in the maximum intercuspation (MI) position. Impressions of maxillary and mandibular arches were made with an irreversible hydrocolloid impression material. Master casts of each patient were obtained, mounted on a microscope table in MI as a reference position and 5 records of each method were made per patient. The mandibular casts were then repositioned with records interposed and new measurements were obtained. The difference between the two readings allowed measuring the displacement of the mandible in the anteroposterior and lateral axes. Data were analyzed statistically by ANOVA and Tukey's test at 5% significance level. There was no statistically significant differences (p>0.05) among the three methods for measuring lateral displacement (A=0.38 ± 0.26, B=0.32 ± 0.25 and C=0.32 ± 0.23). For the anteroposterior displacement (A=2.76 ± 1.43, B=2.46 ± 1.48 and C=2.97 ± 1.51), the swallowing method (B) differed significantly from the others (p<0.05), but no significant difference (p>0.05) was found between chin point guidance (A) and bimanual manipulation (C). In conclusion, the swallowing method produced smaller mandibular posterior displacement than the other methods.

scholarly journals Maximal bite force and its association with temporomandibular disorders

2007 ◽  
Vol 18 (1) ◽  
pp. 65-68 ◽  
Author(s):  
Tatiana Pereira-Cenci ◽  
Luciano José Pereira ◽  
Maximiliano Sérgio Cenci ◽  
Wellington Cardoso Bonachela ◽  
Altair Antoninha Del Bel Cury
Keyword(s):  
Temporomandibular Disorders ◽  
Bite Force ◽  
Control Group ◽  
Control Groups ◽  
Natural Dentition ◽  
And Control ◽  
The Relationship ◽  
Male Subjects ◽  
Posterior Area ◽  
Female Subjects

Individuals with temporomandibular disorders (TMD) are expected to have decreased maximum bite forces (MBF). This way, this study compared the MBF in subjects with TMD to a control group and also evaluated its association with age, gender, height and weight. Forty healthy adults with complete natural dentition divided into four groups according to gender and presence or absence of TMD signs/symptoms (based on the Research Diagnostic Criteria RDC) underwent a MBF test with a gnathodynamometer in molar and incisal areas. Statistical analysis was performed by ANOVA and Student-Newman-Keuls test (p=0.05), and the relationship between age, gender, weight, height and MBF was verified by Pearson's correlation test. There were no differences in MBF results between TMD and control groups (p>0.05). Female subjects exhibited lower MBF than male and MBF for the anterior area was lower than that for posterior area (p<0.05). Significant correlation was found between MBF and weight in TMD subjects (p<0.05), except for the anterior area in female subjects. There was a positive correlation between MBF and height in TMD male subjects (p<0.05). Within the limitations of this study, it is possible to conclude that bite force was not affected by TMD. Correlation between MBF and weight in TMD subjects and between MBF and height in TMD male subjects was observed.

scholarly journals The therapeutic effects of occlusal equilibration in patients with craniomandibular disorders

2003 ◽  
Vol 50 (3) ◽  
pp. 129-136
Author(s):  
Slobodan Dodic
Keyword(s):  
Orthodontic Treatment ◽  
Signs And Symptoms ◽  
Control Group ◽  
Therapeutic Effects ◽  
Male And Female ◽  
Natural Dentition ◽  
Mandibular Movements ◽  
Occlusal Interferences ◽  
Experimental Group

In order to evaluate the role of occlusal factors in the etiology of CMD two groups of participants were selected for this investigation according to the value of the craniomandibular index ( CMI), Fricton and Schiffman 1975. The control group consisted of 17 participants, both male and female between 18 and 25 years of age with the preserved natural dentition, no indices of orthodontic treatment and with the value of the CMI = 0. The experimental group consisted of 15 participants, male and female, between 18 and 25 years of age with preserved natural dentition, no indices of orthodontic treatmen, but with evident signs and symptoms of CM disorders the CMI >0). The chosen participants of the control and experimental group were subject to detailed occlusal analysis which included the number of occlusal contacts in the ICP, RCP,the type of lateral guidance of the mandible and the presence of occlusal interferences during mandibular movements. Using selective grinding the occlusal interferences were eliminated in participants of the experimetal group. The CMI was calculated in this group after selective grinding. The results of the occlusal analysis in this study point to the signifficantly greater number of mediotrusive, retrusive and protrusive interferences in participants of the experimental group The values of CMI before ( CMI I) and after selective grinding (CMI II) in the experimental group confirm the assumption that occlusal interferences play a significant role in the etiology of CMD.

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