Evaluation of condylar inclination of dentulous subjects determined by axiograph and to compare with manual programming of articulators using protrusive interocclusal record

Prasad, Krishna; Shetty, Manoj; Chandy, Binoj K

doi:10.4103/0976-237x.161892

Cited by 11 publications

(6 citation statements)

References 10 publications

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“…1 ). 3 4 In this position, softened 3-mm-thick Aluwax was applied on the protrusive occlusal record resin tray and protrusive occlusal record was prepared. The SCGA was determined using the protrusive occlusal record on an articulator, with two operators calculating the average after making two measurements independently.…”

Section: Methodsmentioning

confidence: 99%

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Correlation between sagittal condylar guidance angles obtained using radiographic and protrusive occlusal record methods

2017

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PURPOSEThis study compared the SCGAs measured in three types of radiographic images (panoramic, CBCT panoramic-section, and CBCT cross-section images) with values measured using the protrusive occlusal record.MATERIALS AND METHODSSCGAs were measured in 20 patients on a semi-adjustable articulator using the protrusive interocclusal record. Panoramic and CBCT images were obtained. SCGAs were measured on CBCT images in panoramic and cross sections. In all of the radiographic images, SCGAs were measured using the Frankfort horizontal reference line and the mean curvature line. The most-superior and most-inferior points of the curvatures were identified to determine the mean curvature line. Each measurement was performed twice by two operators independently. The data were analyzed by the t-test, Pearson's correlation test, and Cronbach's α using SPSS (α=.05).RESULTSThe mean right and left SCGAs were as follows: protrusive occlusal record (30.1 and 30.2 degrees, respectively), panoramic (38.9 and 38.7 degrees), CBCT panoramic sections (35.4 and 36.8 degrees), and CBCT cross sections (35.3 and 36.1 degrees). The SCGAs differed significantly among the groups. The Pearson coefficients for the correlations with the protrusive occlusal record measurements on the left and right sides were as follows: panoramic (0.834 and 0.791, respectively), CBCT panoramic-section (0.918 and 0.837), and CBCT cross-section (0.918 and 0.845) images.CONCLUSIONStrong correlations were found between SCGAs obtained using radiographic images and the protrusive occlusal record.

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Section: Methodsmentioning

confidence: 99%

“… 1 The likelihood of successful complex prosthodontic procedures is increased when the condylar path of the patient is simulated accurately using an articulator, since this can restore the effective shape of the occlusal surface without the occurrence of occlusal interference. 2 3 …”

Section: Introductionmentioning

confidence: 99%

Correlation between sagittal condylar guidance angles obtained using radiographic and protrusive occlusal record methods

2017

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“…Three representative real-time recording systems that are currently utilized are the opto-electric [ 6 , 8 , 9 ], electromagnetic [ 10 , 11 ], and ultrasonic systems [ 12 ]. As a computerized ultrasonic axiography, the AxioQuick ® recorder (SAM Co., Munich, Germany) is specialized in quantitative analysis of the direction and amount of condylar paths within the glenoid fossa during mandibular border movement [ 13 , 14 , 15 ]. This registration system is based on the measurement of real-time latency periods of sequentially transmitted ultrasound pulses between four transmitters attached to the mandible and eight receivers mounted on a face bow [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Automated Real-Time Evaluation of Condylar Movement in Relation to Three-Dimensional Craniofacial and Temporomandibular Morphometry in Patients with Facial Asymmetry

Lee

Park

Kang

et al. 2021

Sensors

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The aim of this study was to investigate the correlation between craniofacial morphology, temporomandibular joint (TMJ) characteristics, and condylar functional movement in patients with facial asymmetry using an up-to-date automated real-time jaw-tracking system. A total of 30 patients with mandibular asymmetry and prognathism were included. Three-dimensional (3D) craniofacial and TMJ morphometric variables were analyzed in images captured using cone-beam computed tomography. Three-dimensional condylar movements were recorded during the opening, protrusion, and laterotrusion of the jaw and divided into those for deviated and non-deviated sides. Overall functional and morphometric variables were compared between the sides by a paired t-test. Pearson’s correlation analysis and factor analysis were also performed. As a result, significant differences were found between the sides in morphometric and functional variables. The condylar path length was significantly longer and steeper on the deviated side during protrusion and lateral excursion. TMJ morphometric asymmetry, more so than the craniofacial morphologic asymmetry, seemed to be reflected in the functional asymmetry, representing different correlations between the sides, as supported by factor analysis. This study provides evidence explaining why the asymmetric condylar path remained unchanged even after orthognathic surgery for the correction of craniofacial asymmetry.

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“…to the remaining part of the non-working condyle path during lateral mandibular movement (which is basically the value of Bennett angle). In general, fully adjustable articulator systems have the possibility of setting/programming the mentioned parameters necessary for as accurate as possible simulation of lateral movements in the articulator ( 14 – 17 ).…”

Section: Introductionmentioning

confidence: 99%

“…There are different studies in the scientific literature in which parameters (sagittal condylar path inclination and Bennett angle) of programming adjustable dental articulators are compared by means of wax eccentric protrusive and lateral records, axiographic devices and/or other methods/instruments ( 17 – 26 ). Prasad et al ( 17 ) compared the average measured values of condylar inclination using an ultrasonic axiograph (SAM Axiograph) and a wax protrusive eccentric record in order to program two articulator systems (SAM and Artex CR). Statistically significant differences were found between two methods used for sagittal condylar inclination measurements in subjects with normal occlusion (Angle class I).…”

Section: Introductionmentioning

confidence: 99%

Comparison of Parameters for Programming Adjustable Dental Articulators by Using Wax Eccentric Records and Arcus Digma Device

Mage

Ćelić

Čimić

et al. 2019

Acta Stomatol Croat

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ObjectivesProgramming of joint mechanism/parameters (sagittal condylar inclination and Bennett angle) of adjustable dental articulators is a prerequisite for performing positions and movements of the mandible. The aim of the study was to test significant differences between the two methods (wax eccentric records and Arcus Digma device) of measuring these joint parameters by using three different dental articulators (SAM 3, Protar 7; and Artex CR).Materials and MethodsThirty asymptomatic younger (age 25.7 ± 2.9 years) subjects (dental medicine students) divided by gender, with normal occlusion (Angle class I) participated in the study. After taking anatomical impressions of both dental arches, master casts were made of hard dental plaster for each subject. The values of the left and right sagittal condylar inclination and Bennett angle by the two methods of wax eccentric protrusive and lateral records and Arcus Digma device were measured for the purpose of programming the mentioned joint parameters in three different articulator systems.ResultsThe average values of the measured parameters of sagittal condylar inclination and Bennett angle of wax eccentric records were higher (ranging from 5ºto 10º) in relation to the values measured by Arcus Digma device. Statistically significant differences found between the measured joint parameters (p <0.025) were influenced by the articulator system design and measurement methods (t-test for dependent samples and MANOVA).ConclusionThe use of Arcus Digma device should be considered reliable and valid for individualized programming of dental articulators, rather than the use of wax eccentric records.

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Evaluation of condylar inclination of dentulous subjects determined by axiograph and to compare with manual programming of articulators using protrusive interocclusal record

Cited by 11 publications

References 10 publications

Correlation between sagittal condylar guidance angles obtained using radiographic and protrusive occlusal record methods

Correlation between sagittal condylar guidance angles obtained using radiographic and protrusive occlusal record methods

Automated Real-Time Evaluation of Condylar Movement in Relation to Three-Dimensional Craniofacial and Temporomandibular Morphometry in Patients with Facial Asymmetry

Comparison of Parameters for Programming Adjustable Dental Articulators by Using Wax Eccentric Records and Arcus Digma Device

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