Correlation between Mandibular Radiomorphometric Parameters and Gonial Angle size in Iranian Adults

Mirbeigi, Sanam; Khojastepour, Leila; Ezoddini, Fatameh

doi:10.18869/acadpub.3dj.3.3.28

Cited by 3 publications

(5 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mandibular gonial angle has a significant implication to other anthropo‐radiometric values of the mandible . These include mean cortical thickness, panoramic mandibular index, mandibular height, and intensity of muscle pull .…”

Section: Discussionmentioning

confidence: 99%

“…The mandibular gonial angle has a significant implication to other anthropo-radiometric values of the mandible. 9 These include mean cortical thickness, panoramic mandibular index, mandibular height, and intensity of muscle pull. 10 The gonial angle has been considered a vital criterion in studying the anatomy and planning of orthodontic corrections in patients with skeletal discrepancies and as a critical forensic identification tool.…”

Section: Re Sultsmentioning

confidence: 99%

See 1 more Smart Citation

The influence of the mandibular gonial angle on the occurrence of mandibular angle fracture

Dhara

Kamath

Vineetha

2019

Dental Traumatology

View full text Add to dashboard Cite

Background/Aims Angle fractures represent the largest percentage of mandibular fractures. They pose as a unique entity because of their codependent morphological dynamic factors, rendering the understanding of the mechanism, and treatment challenging. The aim of this study was to analyze the association between the mandibular gonial angle and the risk of mandibular angle fracture while highlighting its clinical relevance. Materials and Methods A retrospective analysis of radiographs of patients treated for mandibular fractures was done. The factors studied were as follows: the presence of a high gonial angle and an impacted third molar. The outcome was mandibular angle fracture. The gonial angle was measured using Planmeca Digital Software 3.7.0.R. Status of the third molar was also noted. Data obtained were analyzed using SPSS 22 (IBM Corp, Armonk, NY). Results The sample comprised 70 mandibular fractures (32 angle fractures and 38 non‐angle fractures). The mean gonial angle in the angle fracture group was 128.5 ± 5.4º which was 10.2° larger than in the non‐angle group (mean 118.5 ± 4.4º; P = 0.0001). Patients with a high gonial angle were 8.7 times more likely to sustain an angle fracture than those with normal or low gonial angles. A statistically significant relationship between the presence of impacted third molar and patients sustaining mandibular angle fractures was noted (P = 0.0001). Conclusion Subjects with a high gonial angle and an impacted third molar are at an increased risk for mandibular angle fracture due to direct and indirect morphological factors.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Re Sultsmentioning

confidence: 99%

The influence of the mandibular gonial angle on the occurrence of mandibular angle fracture

Dhara

Kamath

Vineetha

2019

Dental Traumatology

View full text Add to dashboard Cite

show abstract

“…The mandibular gonial angle has a significant implication to other anthroporadiometric values of the mandible, which include mean cortical thickness, panoramic mandibular index, mandibular height, and intensity of muscle pull. [ 4 9 10 ] It is an important anthropometric feature which contributes to facial esthetics and biodynamics of masticatory musculature. In practice, gonial angle is assessed by radiographic analysis.…”

Section: Discussionmentioning

confidence: 99%

Magnitude of gonial angle influence on the commonness of mandibular angle fractures

Tiwari

Bera

Chauhan

2020

Ann Maxillofac Surg

View full text Add to dashboard Cite

Background: The aim of the study was to review the literature on the influence of gonial angle on mandibular angle fracture. The present systematic review addresses the following focus question: Does the magnitude of gonial angle influence the incidence of mandibular angle fractures? Materials and Methods: Electronic and manual literature searches were conducted on databases: PubMed/MEDLINE, Embase, Science direct, the Cochrane Library, and clinicaltrials.gov for studies published up to August 2019 to collect information about the effect of gonial angle, a skeletal morphological parameter with an incidence of fracture of the angle of the mandibular arch. Systematic literature review was performed to identify studies evaluating the effect of gonial angle in patients suffering from mandible fractures. Large retrospective studies were included and case reports were excluded. Results: Fifteen hundred articles published before August 2019 were identified. One hundred and sixteen articles met the inclusion criteria. Two articles remained when exclusion criteria were applied. As measured in the two included studies containing 280 panoramic radiographs of mandibular fractures, the mean gonial angle of patients in the angle fracture group ranged from 126.8° ± 7.9° to 128.5° ± 5.4°. The mean gonial angle of patients in the nonangle fracture group ranged from 118.5° ± 4.4° to 122.3° ± 4.9°. The mean gonial angle of patients in the angle fracture group displayed a range from 118.9° to 134.7° (confidence interval [CI] 95% 5.89–8.05), whereas the mean gonial angle of patients in nonangle fracture group displayed a range from 114.1° to 127.2° (CI 95% 3.89–4.95). Conclusion: A high gonial angle is an important factor influencing the occurrence of mandibular angle fractures owing to the poorer quality of bone and reduced height at the ramus angle region, all of which necessitate a modification of osteosynthesis techniques.

show abstract

“…It was in accordance with other studies. 5,[53][54][55][56][57][58][59][60][61][62] It may be due to a downward and backward turning in the mandible for the women when men had a forward movement. Besides, the function of masticatory muscles can be more impressive in the gonial zone.…”

Section: Indices Men (N = 112)mentioning

confidence: 99%

“…It is in agreement with other studies. 5,[61][62][63] It may be owing to the masseter muscles connected to a mandible with a small size of GA perform higher force. Therefore, masticatory force effects on the morphology of the mandible and the size of GA accompanied with the increment and reduction in the MI, PMI, GI, AGI, RH, and RW values.…”

Section: Indices Men (N = 112)mentioning

confidence: 99%

Measuring panoramic radiomorphometric indices for mandible bone using active shape model and Bayesian information criterion‐support vector machine

Rafati

Farnia

Romoozi

et al. 2021

Int J Imaging Syst Tech

View full text Add to dashboard Cite

This article proposes an automatic method based on a combination of active shape model (ASM) and nonlinear support vector machine (SVM) accompanied with Bayesian information criterion which is utilized in order to measure radiomorphometric indices for digital X-ray panoramic system. After omitting Poisson noise of input images, the image is divided. It attempts to choose suitable region of interest (ROI) in order to extract indices. This region becomes small and smaller during some steps until the final ROI is found and the mandible's cortex and ramus are detected. Finally, because of measuring the required parameters, ASM and SVM are used in order to evaluate exact setting of the detected region. Experimental results show no significant differences between right and left sides in terms of mental index (MI), panoramic mandibular index (PMI), gonial angle (GA), gonial index (GI), antegonial index (AGI), ramus height (RH), and ramus width (RW); however, in terms of GI and AGI for both sexes. There are significant differences between men and women for all indices in the mandible (P-value <.05). There was a mild negative significant correlation among GA and MI, GI, AGI and a moderate negative significant correlation among GA and PMI, RH, RW for both genders (P-value <.05). Besides, it has been shown measuring the panoramic indices provide useful information about trauma and prediction of asymptomatic subjects with osteoporosis at an earlier step.

show abstract

Correlation between Mandibular Radiomorphometric Parameters and Gonial Angle size in Iranian Adults

Cited by 3 publications

References 28 publications

The influence of the mandibular gonial angle on the occurrence of mandibular angle fracture

The influence of the mandibular gonial angle on the occurrence of mandibular angle fracture

Magnitude of gonial angle influence on the commonness of mandibular angle fractures

Measuring panoramic radiomorphometric indices for mandible bone using active shape model and Bayesian information criterion‐support vector machine

Contact Info

Product

Resources

About