A STUDY OF CONDYLAR POSITION IN CENTRIC RELATION AND MAXIMAL INTERCUSPATION USING CONEBEAM TOMOGRAPHY

2019 ◽  
pp. 84-92
Author(s):  
Anh Chi Phan ◽  
Xuan Anh Ngoc Ho
Keyword(s):  
Dental Students ◽  
Cone Beam ◽  
Test Results ◽  
Reference Position ◽  
Centric Relation ◽  
Temporomandibular Joints ◽  
Significant Difference ◽  
Mandibular Fossa ◽  
Condylar Position ◽  
Cone Beam Tomography

Background: The condylar position discrepancy between centric relation and maximal intercuspation has been still a controversial issue. Aims: To compare the condylar position between centric relation and maximal intercuspation using cone-beam tomography in patients without temporomandibular joints disorder. Materials and methods: To assess the condylar position in centric relation and maximal intercuspation using cone-beam tomography on 40 fifth-year and sixth-year dental students of Hue University of Medicine and Pharmacy without temporomandibular joints disorder. The condylar positions are assessed following Sener classification (2009) and are compared between centric relation and maximal intercuspation using pairedsamples t-test and Mann-Whitney U-test. Results: Among 480 condye-to-fossa measurement pairs, there are 91.2% pairs having difference between two reference position but there is no significant difference. The condylar position at the superior of mandibular fossa has the greatest percentage in both centric relation and maximal intercuspation (43.8% in centric relation and 51.2% in maximal intercuspation). This greatest percentage is followed by the condylar position at posterior of mandibular fossa (32.5% in centric relation and 36.3% in maximal intercuspation). Lastly, the condylar position at the anterior of mandibular fossa has the fewest percentage (23.7% in centric relation and 12.5% in maximal intercuspation). Conclusion: There is no significant difference of condylar position between centric relation and maximal intercuspation in patients without temporomandibular joints disorder. Key words: Condylar position, centric relation, maximal intercuspation, cone-beam tomography

scholarly journals Cone-beam tomography assessment of condylar position discrepancy between centric relation and maximal intercuspation

2011 ◽  
Vol 26 (1) ◽  
pp. 29-35 ◽  
Author(s):  
João César Guimarães Henriques ◽  
Alfredo Júlio Fernandes Neto ◽  
Guilherme de Araújo Almeida ◽  
Naila Aparecida de Godoi Machado ◽  
Éverton Ribeiro Lelis
Keyword(s):  
Cone Beam ◽  
Centric Relation ◽  
Condylar Position ◽  
Cone Beam Tomography

scholarly journals Image-based study of marginal bone loss in teeth restored with cast endodontic posts

2018 ◽  
Vol 66 (4) ◽  
pp. 353-359
Author(s):  
Sandro Luiz FARIAS ◽  
Milena Bortolloto Felippe SILVA ◽  
Rielson José Alves CARDOSO ◽  
Marcelo SPERANDIO
Keyword(s):  
Bone Loss ◽  
Root Length ◽  
Cone Beam ◽  
Marginal Bone Loss ◽  
Significant Difference ◽  
Cone Beam Tomography ◽  
Bone Height

ABSTRACT The aim of this study was to assess marginal bone loss in teeth restored with endodontic posts on all four aspects of the teeth using cone beam tomography. Bone loss was assessed via scores (0-5) in relation to root length and bone height. The results showed that the scores for the contralateral and restored sides, respectively, ranged from 0 to 3 and 0 to 5 buccally, 0 to 4 and 0 to 4 palatally, 0 to 3 and 0 and 4 mesially and 0 to 3 and 0 to 4 distally. A significant difference in bone loss was observed between the post-restored teeth and their contralaterals for the buccal, lingual/palatal and mesial aspects (p<0.05), with teeth bearing endodontic posts scoring highest. In conclusion, marginal bone loss was higher in teeth restored with intra-canal posts when compared to their sound contralaterals.

scholarly journals Cone beam tomography and panoramic radiography in localization of impacted maxillary canine and detection of root resorption

2021 ◽  
Vol 8 (2) ◽  
pp. 106-112
Author(s):  
Seden Akan ◽  
◽  
Husamettin Oktay ◽  
Keyword(s):  
Root Resorption ◽  
Cone Beam ◽  
Test Results ◽  
Chi Square ◽  
Exact Test ◽  
Panoramic Radiographs ◽  
Panoramic Images ◽  
Chi Square Test ◽  
Index 2 ◽  
Cone Beam Tomography

ntroduction The aim of this study was to evaluate cases of impacted maxillary canines (IMC) using cone beam tomography (CBCT) and panoramic images in an attempt to assess if panoramic radiographs can provide information compatible with CBCT results regarding canine position and root resorption. Methodology Fifty-six impacted maxillary canines from 48 patients were radiographically evaluated. The positions of the canine teeth were classified by Sector localization on panoramic radiographs and the same teeth were also analyzed by KPG on CBCT. Root resorptions in maxillary lateral incisors were also evaluated on CBCT. The relationships between panoramic and CBCT findings were compared by Chi-square test and Fischer’s exact test. Results Statistically significant correlations were found between panoramic Sectors and KPG indexes (p<0.001). KPG index values of 1, 3 and 4 corresponded to the panoramic Sectors 1, 4 and 5, respectively; but KPG index 2 matched the panoramic Sectors 3 and more often 2. Mid-alveolar impaction generally coincided with score 1 for both KPG index and panoramic Sector. In palatally IMC, this score value was generally 2 or 3 for the KPG index and 4 for the panoramic Sector (p≤0.001). Root resorptions in maxillary lateral incisors showed significant differences according to Sector localization and KPG index (p<0.05), namely they coincided with 2 and 3 in Sector evaluation and 2, 3 and 4 in KPG index. Conclusions Sector location on OPG is found to be related to KPG index on CBCT, and it can help evaluate mainly certain positions of impacted canines; thus, unnecessary CBCT scans are not requested.

Improved Visualization and Assessment of Condylar Position in the Glenoid Fossa for Different Occlusions: A CBCT Study

2016 ◽  
Vol 17 (8) ◽  
pp. 679-686 ◽  
Author(s):  
Amandeep Kaur ◽  
Amanpreet S Natt ◽  
Simranjeet K Mehra ◽  
Karan Maheshwari ◽  
Amanjot Kaur
Keyword(s):  
Orthodontic Treatment ◽  
Sagittal Plane ◽  
Frontal Plane ◽  
Cone Beam ◽  
Glenoid Fossa ◽  
Computed Tomographic ◽  
Significant Difference ◽  
Condylar Position ◽  
The Stability ◽  
The Right

ABSTRACT Introduction The position of the condyle in the glenoid fossa plays an important role in the stability of occlusion after orthodontic treatment. Cone beam computed tomography (CBCT) provides an optimal imaging of the osseous components of the temporomandibular joint (TMJ) and give a full size truly threedimensional (3D) description in real anatomical size. The present study aimed to visualize and compare the position of condyle in the glenoid fossa for different occlusions by using CBCT. Materials and methods Cone beam computed tomographic images of 45 subjects, aged 18 to 42 years, were evaluated. Subjects were equally divided into three groups according to the A point, nasion, B point (ANB) angle. Results In the sagittal plane, condyle is positioned nonconcentrically; positioned anteriosuperiorly in class I and III occlusions and lies posteriosuperiorly in class II occlusion. In the frontal plane, condyle is positioned centrally (mediolaterally) in all the three types of occlusions. In the axial plane, the parameters showed significant difference between the different occlusions. No statistical significant distinction could be made in the position of the condyle when comparing the right and left joints. Conclusion The position of condyle in glenoid fossa influences sagittal, transverse, and vertical relationships of the jaws which eventually contribute to development of various malocclusions. Nonconcentricity is the feature of the condyle in the sagittal plane in different malocclusions. Clinical significance An important consideration in orthodontic treatment is the recognition of the importance that the dentition should be in harmony with the related musculoskeletal structures. Therefore, the condylar position is an important concern in maintaining or restoring temporomandibular harmony with the dentition and the position of the condyle in the glenoid fossa plays an important role in the stability of occlusion after orthodontic treatment. How to cite this article Kaur A, Natt AS, Mehra SK, Maheshwari K, Singh G, Kaur A. Improved Visualization and Assessment of Condylar Position in the Glenoid Fossa for Different Occlusions: A CBCT Study. J Contemp Dent Pract 2016;17(8):679-686.

scholarly journals Evaluation of temporomandibular joint disorders using cone beam computed tomography

2017 ◽  
Vol 3 (4) ◽  
pp. 698
Author(s):  
Sonam Kohli ◽  
Rahul Krishan Sharma ◽  
Anchal Goel ◽  
M. K. Sunil
Keyword(s):  
Computed Tomography ◽  
Temporomandibular Joint ◽  
Cone Beam Computed Tomography ◽  
Joint Space ◽  
Temporomandibular Joint Disorders ◽  
Cone Beam ◽  
Glenoid Fossa ◽  
Significant Difference ◽  
Mandibular Fossa ◽  
Osseous Changes

<p class="abstract"><strong>Background:</strong> <span lang="EN-IN">The aim of this study was to evaluate efficacy of segmental cone beam computed tomography (CBCT) in detecting bony changes in condyle and thickness of roof of glenoid fossa in temporomandibular joint (TMJ) disorders.</span></p><p class="abstract"><strong>Methods:</strong> The study group comprised of 10 temporomandibular disorders (TMD) patients of either sex between the age group of 20-60 years diagnosed as TMDs by clinical evaluation using the research diagnostic criteria was considered. After the clinical examination, radiographic investigations were carried out which included digital OPG, transcranial radiograph and CBCT scan. TMJ Evaluation included: (a) bony changes of the condyle (flattening, erosion, sclerosis, osteophytes, resorption); (b) joint space (normal, increased, reduced, bony contact between the condyle and the mandibular fossa); and (c) bony changes of mandibular fossa (normal, sclerosis, erosion, resorption). The radiographic findings were statistically analysed.<strong></strong></p><p class="abstract"><strong>Results:</strong> <span lang="EN-IN">Significant difference between OPG, transcranial and CBCT were found for the presence of erosion (P =0.000), thickness of roof of glenoid fossa (P =0.000), deformed contour (P =0.001), joint space (P =0.011), subchondral sclerosis (P =0.011), irregularity of articular surface and eminence (P =0.000), flattening (P =0.050). </span></p><p class="abstract"><strong>Conclusions:</strong> Using CBCT as imaging technique in our study to detect osseous changes in the TMJ was proved to be effective as compared to the conventional radiographic techniques, the results achieved with CBCT was 100%.The results obtained in our study prove to be a full proof one and it seems to promise to go one step closer to detect progression and severity of the osseous changes in the condylar head and mandibular fossa in patients with TMDs<span lang="EN-IN">.</span></p>

scholarly journals Cone-beam tomography assessment of the condylar position in asymptomatic and symptomatic young individuals

2015 ◽  
Vol 114 (3) ◽  
pp. 420-425 ◽  
Author(s):  
Éverton Ribeiro Lelis ◽  
João César Guimarães Henriques ◽  
Marcelo Tavares ◽  
Marcos Rogério de Mendonça ◽  
Alfredo Júlio Fernandes Neto ◽  
...  
Keyword(s):  
Cone Beam ◽  
Condylar Position ◽  
Cone Beam Tomography

scholarly journals Cone-Beam Computed Tomographic Assessment of Mandibular Condylar Position in Patients with Temporomandibular Joint Dysfunction and in Healthy Subjects

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Maryam Paknahad ◽  
Shoaleh Shahidi ◽  
Shiva Iranpour ◽  
Sabah Mirhadi ◽  
Majid Paknahad
Keyword(s):  
Temporomandibular Joint ◽  
Temporomandibular Disorder ◽  
Clinical Findings ◽  
Cone Beam ◽  
Chi Square ◽  
Computed Tomographic ◽  
Temporomandibular Joints ◽  
Chi Square Test ◽  
Condylar Position ◽  
Asymptomatic Subjects

Statement of the Problem. The clinical significance of condyle-fossa relationships in the temporomandibular joint is a matter of controversy. Different studies have evaluated whether the position of the condyle is a predictor of the presence of temporomandibular disorder.Purpose. The purpose of the present study was to investigate the condylar position according to gender in patients with temporomandibular disorder (TMD) and healthy controls using cone-beam computed tomography.Materials and Methods. CBCT of sixty temporomandibular joints in thirty patients with TMD and sixty joints of thirty subjects without TMJ disorder was evaluated in this study. The condylar position was assessed on the CBCT images. The data were analyzed using Pearson chi-square test.Results. No statistically significant differences were found regarding the condylar position between symptomatic and asymptomatic groups. Posterior condylar position was more frequently observed in women and anterior condylar position was more prevalent in men in the symptomatic group. However, no significant differences in condylar position were found in asymptomatic subjects according to gender.Conclusion. This study showed no apparent association between condylar positioning and clinical findings in TMD patients.

scholarly journals Evaluation of the condylar position in subjects with signs and symptoms of functional disorders of the temporomandibular joint through images made with cone beam computed tomography on the sagittal plane

2014 ◽  
Vol 17 (2) ◽  
pp. 77
Author(s):  
Marcelo Oliveira Mazzetto ◽  
Giovana Cherubini Veneziam ◽  
Laís Valencise Magri ◽  
Mario Kaissar Nasr ◽  
Alexandra Faria Paiva ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Measurement Method ◽  
Sagittal Plane ◽  
Signs And Symptoms ◽  
Cone Beam ◽  
Functional Disorders ◽  
Temporomandibular Joints ◽  
Condyle Position ◽  
Condylar Position

<p>ABSTRACT: The aim of the study was to investigate the condylar position within the articular cavity in patients with temporomandibular disorders with signs and symptoms of functional articular disorders through images made with cone beam computed tomography (CBCT) on the sagittal plane. Methods: CBCT temporomandibular joints images of 62 patients (13 men and 49 women, average age, 39.7 years) with signs and symptoms intra-articular diagnosed by the Craniomandibular index were analyzed using the measurement method recommended by Kawamura and Ikeda (2009). We obtained the linear measures of posterior space (PS), superior space (SS), and the anterior space (AS) to determine the condyle position for each joint. Results: The average of the measurements of PS, SS, were respectively 1.9 mm (DP 0.5), 3.1 mm (DP 0.9), and 2.0 mm (DP 1.0). Conclusion: This study found that the subjects with intra-articular TMD when compared with the excellent condylar relationship established by Ikeda and Kawamura (2009) presented a more posterior and inferior condylar position.</p>

Radiologic Aspects of a High-Risk Ethmoid and the Rhinobase in Cone Beam Tomography

Skull Base ◽  
2011 ◽  
Vol 21 (S 01) ◽  
Author(s):  
Christian Gueldner ◽  
Isabell Diogo ◽  
Siegfried Bien ◽  
Afshin Teymoortash ◽  
Jochen Werner
Keyword(s):  
High Risk ◽  
Cone Beam ◽  
Cone Beam Tomography
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