The Gothic arch (needle point) tracing and condylar inclination

El-Gheriani, A.S.; Winstanley, R B

doi:10.1016/0022-3913(87)90400-8

Cited by 6 publications

(6 citation statements)

References 12 publications

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“…The results of the current study went along with those of El-Gheriani and Winstanley (28) who reported the presence of great variation in condylar inclinations between the studied patients on one side and between the left and right sides of the same patient. Such variation could be explained in that the protrusive and retrusive movements, generated by condylar translation, are influenced by the shape of the eminentia and their maximal range is restricted by the mechanical constraint of the temporomandibular ligaments, namely the stylomandibular ligament and capsule causing the condyles to have limited rotation during protrusion and retrusion (29) .This has been clearly explained in that the downward inclination of the articular eminence makes it plausible that the condyle is slightly pressed against the articular eminence during the main translatory protrusive movement and opening movement which are considered of a compressive nature (30) .…”

Section: Discussion Horizontal Condylar (Protrusive) Anglesupporting

confidence: 85%

“…Since many condylar path recordings have pronounced curvatures, it's doubtful that an articulator can be programmed to reproduce the condylar inclination by assigning fixed values to it, thus a custom-fossa insert that could be shaped to follow the curvature of the condylar path would be more accurate (28) .…”

Section: Discussion Horizontal Condylar (Protrusive) Anglementioning

confidence: 99%

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A Comparison between the Horizontal Condylar and Bennett Angles of Iraqi Full Mouth Rehabilitation Patients by Using Two Different Articulator Systems : An In-Vivo Study

Zakaria¹

2016

JBCD

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Background: Errors of horizontal condylar inclinations and Bennett angles had largely affected the articulation of teeth and the pathways of cusps. The aim of this study was to estimate and compare between the horizontal condylar (protrusive) angles and Bennett angles of full mouth rehabilitation patients using two different articulator systems. Materials and Methods: Protrusive angles and Bennett angles of 50 adult males and females Iraqi TMD-free full mouth rehabilitation patients were estimated by using two different articulator systems. Arbitrary hinge axis location followed by protrusive angles and Bennett angles, estimation was done by a semiadjustable articulator system. A fully adjustable articulator system was utilized to locate the terminal hinge axis using a kinematic face bow followed by protrusive angles location by the aid of two square shaped transparent hard plastic protractors attached close to the condylar stylus of the articulator followed by Bennett angles calculation according to the Hanau formula. All results were subjected to statistical analyses. Results: The two articulator systems scored protrusive angles for male patients greater than female patients which were non-significant for the fully adjustable articulator but they were significant for the semiadjustable articulator. Non-significance existed between females of the fully adjustable articulator and males of the semiadjustable articulator while high significance was located between males of the fully adjustable articulator and females of the semiadjustable articulator. Concerning Bennett angles, the highest mean value belonged to the male group of the fully adjustable articulator, while the lowest scored by the female group of the semiadjustable articulator. Highly significant differences were located between the Bennett angle mean values of the groups. Conclusion: Using both articulators, the total mean values of the males were greater than the females regarding both horizontal condylar angles and Bennett angles with the total means scored by the fully adjustable articulator being larger than those of the semi-adjustable type. Using both articulators, the males' right and left condyles exhibited greater Bennett angles than their female equivalents. The precision estimation of the horizontal condylar angles and Bennett angles provided by the condylar axis protractors of the fully adjustable articulator render such type of articulators most suitable for treating full mouth rehabilitation cases.

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Section: Discussion Horizontal Condylar (Protrusive) Anglesupporting

confidence: 85%

Section: Discussion Horizontal Condylar (Protrusive) Anglementioning

confidence: 99%

A Comparison between the Horizontal Condylar and Bennett Angles of Iraqi Full Mouth Rehabilitation Patients by Using Two Different Articulator Systems : An In-Vivo Study

Zakaria¹

2016

JBCD

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“…The tan value of the slope gives the angle (∞) which denotes the lateral condylar guidance. [ 7 8 9 ]…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Hanau's formula in determination of lateral condylar guidance: A clinical research study

Bhawsar

Marathe

Ansari

2015

J Indian Prosthodont Soc

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Statement of Problem:The accuracy and reliability of the methods used for programming the semi-adjustable articulators determine the accuracy in occlusion. The current recommended average settings using the Hanau's formula commonly used by clinicians is questionable, and thus reassessment is needed. This study was carried out to evaluate and compare the lateral condylar guidance: (1) Using the Hanau's formula and the computerized jaw tracking device (Kinesiograph). (2) On the right and left sides using both these methods.Materials and Methods:A total of 20 completely edentulous patients (14 male and 6 females) within 40–60 years of age were selected. Jaw relation was recorded followed by face bow transfer. Extraoral Gothic arch tracing was recorded; three protrusive records were obtained and condylar guidance was calculated. Lateral condylar guidance was then calculated using Hanau's formula, followed by the computerized jaw tracking device. A comparative evaluation was done of the obtained values. The same investigator worked with each of the study participants for the purpose of standardization.Results:The lateral condylar guidance values obtained using the Hanau's formula ranged from 14 to 17° while those obtained using the computerized K7 jaw tracking device ranged from 8 to 40°. Bennett angle values, obtained using the jaw tracking device and Hanau's formula showed statistically significant differences (P < 0.05) using paired t-test (at 95% confidence interval). Bennett angle values of the right and left sides found using the Hanau's formula were almost similar. Difference in the Bennett angle values of the right and left sides were found using the jaw tracking device. However, this difference was not statistically significant (P > 0.05).Conclusion:Based on the results, dentist and dental technicians should consider reassessing the current recommended average settings and use of the Hanau's formula for programming the semi-adjustable articulators.

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“…The arbitrary hinge axis position was located and marked with a method described by (BrandrupWognsten) (9) as instructed by the Quick Set Recorder manufactures. On a line extending from the tragus to the lateral angle of the eye, a point was marked at about 12 mm in front of the posterior margin of the most prominent point of the tragus.…”

Section: Recording the Protrusive Condylar Pathmentioning

confidence: 99%

The Effect of Hinge Axis Position on Mandibular Movements

Salam¹

2016

ADJ-for Girls

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The objective of this study was to evaluate the effect of an arbitrary and true hinge axis on the Bennett shift and the horizontal condylar path inclination. Ten completely edentulous subjects were selected for this study. For each subject, true and arbitrary hinge axis positions were located. Whip Mix Quick Set Recorder was used to measure the Bennett shift and the horizontal condylar path inclination. The Bennett shift and condylar path inclinations were recorded two times, first using the arbitrary and secondary using the kinematic hinge axis as the starting point for recording. The result of this study showed that there were no statistical differences between the two measures of the Bennett shift and horizontal condylar path inclination.

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The Gothic arch (needle point) tracing and condylar inclination

Cited by 6 publications

References 12 publications

A Comparison between the Horizontal Condylar and Bennett Angles of Iraqi Full Mouth Rehabilitation Patients by Using Two Different Articulator Systems : An In-Vivo Study

A Comparison between the Horizontal Condylar and Bennett Angles of Iraqi Full Mouth Rehabilitation Patients by Using Two Different Articulator Systems : An In-Vivo Study

Evaluation of Hanau's formula in determination of lateral condylar guidance: A clinical research study

The Effect of Hinge Axis Position on Mandibular Movements

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