Relationship Between Occlusal Plane and Three Levels of Ala Tragus line in Dentulous and Partially Dentulous Patients in Different Age Groups: A Pilot Study

Shaikh, Saquib Ahmed; Lekha, K; Mathur, G P

doi:10.7860/jcdr/2015/11820.5575

Cited by 13 publications

(21 citation statements)

References 9 publications

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“…This was due to the limited number of down syndrome samples. The study by Shaikh et al 12 showed that normal individuals in the young adult age group (20-35 years) have an occlusal plane that is more parallel to the inferior ala-tragus line, whereas the occlusal plane of the older adult group (36-50 years) is parallel to the middle tragus line. The group of down syndrome The analysis of student t-test in this study obtained the value t = 2.15 with p-value = 0.043 (p-value <0.05).…”

Section: Resultsmentioning

confidence: 99%

“…The inferior border of the ala nose and ear tragus is an extra oral landmark that can be used as a reference plane to determine the occlusal plane because both are relatively constant and not affected by the aging process. The majority of the previous study showed that the occlusal plane was parallel to the inferior ala-tragus line [9][10][11][12]15,16 but some other studies demonstrated that the occlusal plane is parallel to the superior alatragus line 18 and middle. 11,12,17,19,24 The occlusal plane parallelism should be determined not only from one anatomical landmark but also from a combination of other anatomical landmarks.…”

Section: Discussionmentioning

confidence: 99%

“…The parallelism of the fox plane with the ala-tragus line was then analyzed in the photo results. 9,12 Tracing the photo was done using Autocad 2013 software (Autodesk, USA). 9,12 The line was drawn from the inferior border of the ala of the nose to the tragus point (superior, middle and inferior) then the angle of intersection between the fox plane with each alatragus line was measured ( Figure 1).…”

Section: Methodsmentioning

confidence: 99%

“…The resulted angle values were recorded for data analysis. 9,12 The ala-tragus line which is considered as the most parallel to the occlusal plane is the line that forms the smallest angle to the fox plane. Data analysis of this research was carried out using t-test to test the difference of two mean values in two populations.…”

Section: Methodsmentioning

confidence: 99%

“…Previous researchers divided the ear tragus into 3 different points, namely the superior tragus, middle tragus, and inferior tragus. [9][10][11][12] Nayar et al 9 and Kumar et al 10 reported that the occlusal plane in a normal individual is almost parallel to the line drawn from the ala of the nose to the inferior border of the tragus.…”

Section: Introductionmentioning

confidence: 99%

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The differences in parallelism between ala-tragus line and occlusal plane of down syndrome and normal individuals

Kusumadewi

Kurnikasari

Rikmasari

et al. 2020

Majalah Kedokteran Gigi Indonesia

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People with down syndrome have a different craniofacial structure compared to normal individuals. Commonly, down syndrome patients have abnormal ear morphology with smaller size, and lower ear position compared to that of normalsubjects. These patients also have smaller nose, shorter maxilla structure and facial height. Other disorders are anomalies in tooth shape, numbers and size. The ala-tragus line is one of the anatomical landmarks to determine the occlusal plane orientation. Abnormalities in the anatomical structure of people with down syndrome can affect the parallelism between the ala-tragus line and the occlusal plane. The purpose of this research was to determine the differences in parallelism between the ala-tragus line and the occlusal plane of people with down syndrome and normal individuals. The sample in this study were people with down syndrome and normal individuals. The sample was photographed using a digital camera with a fox plane attached to the oral cavity. Parallelism of the ala-tragus line and the occlusal plane was analyzed by tracing these photographs. Photo tracing was done using the Autocad 2013 software. The mean value of angle on people with down syndrome (5.852° ± 5.367°) was greater than that of normal individuals (2.169° ± 2.557°). Based on the research, it was concluded that the parallelism of the ala-tragus line to the occlusal plane in people with down syndrome was different from that in normal individuals. The ala-tragus inferior line in normal individuals was more parallel to the occlusal plane compared to that in people with down syndrome.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The differences in parallelism between ala-tragus line and occlusal plane of down syndrome and normal individuals

Kusumadewi

Kurnikasari

Rikmasari

et al. 2020

Majalah Kedokteran Gigi Indonesia

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Coordinating bracket torque and incisor inclination

Zimmer

Sino

2018

J Orofac Orthop

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Relationship between the occlusal plane and three different levels of ala-tragus line in a sample of Sudanese adults

Ahmed,

Ismail

2023

J Oral Res

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Aim: Correct orientation of the occlusal plane plays a vital role in achieving the perfect occlusal balance and function of complete dentures. This study aimed to evaluate the most reliable posterior reference point of the ala-tragus line (ATL) concerning occlusal plane (OP) in a sample of the dentate Sudanese population. Materials and Methods: A total of 150 subjects with healthy and well-aligned permanent teeth were randomly selected. Right lateral profile photographs were taken with subjects having a fox plane placed intra-orally, contacting the occlusal plane. Reference points corresponding to inferior, middle, and superior borders of the tragus and inferior border of the ala of the nose were marked on photographs. The angles between the lines were measured using the Auto-CAD software program, and the most parallel relationship was determined. Descriptive statistics in terms of means and standard deviations were presented. Independent t-test and one-way ANOVA tests were used to compare as appropriate. A p-value < 0.05 was considered significant. Results: The mean angle formed by the OP and ATL was 8.5±3.69º for the superior level, 4.68±3.13º for the middle line, and 2.89±2.57º for the inferior line. A significant difference was found between the means of the three angles (p< 0.001), while no significant difference (p> 0.05) was found between both genders regarding the measured angles. Conclusions: The line joining the inferior border of the ala of the nose with the inferior border of the tragus of the ear was the most reliable line in terms of parallelism to determine the occlusal plane orientation. Keywords: Occlusal plane; Denture, complete; Prosthodontics; Anatomic landmarks; Cephalometry; Sudan.

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Relationship Between Occlusal Plane and Three Levels of Ala Tragus line in Dentulous and Partially Dentulous Patients in Different Age Groups: A Pilot Study

Cited by 13 publications

References 9 publications

The differences in parallelism between ala-tragus line and occlusal plane of down syndrome and normal individuals

The differences in parallelism between ala-tragus line and occlusal plane of down syndrome and normal individuals

Coordinating bracket torque and incisor inclination

Relationship between the occlusal plane and three different levels of ala-tragus line in a sample of Sudanese adults

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