Edentulousness in relation to remodeling of the gonial angles and incisures in dentate and edentate mandibles: morphometric study using the Image J software

Aragão, José Aderval; Souto, Maria Luisa Silveira; Mateus, Carla Rocha São; Menezes, Liciane Dos Santos; Reis, Francisco Prado

doi:10.1007/s00276-014-1335-1

Cited by 8 publications

(9 citation statements)

References 17 publications

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“…Tozoğlu and Çakur (16) reported similar results of a larger GA in edentulous patients although not statistically significant. The results of the present study also are in line with those of previous studies which did not find a significat association between edentulousness and changes in the GA (23,24). However, a significant increase of the GA in edentulous patients compared to dentate patients was reported (5,18).…”

Section: Discussionsupporting

confidence: 93%

Influence of tooth loss on mandibular morphology: A cone-beam computed tomography study

et al. 2019

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BackgroundTooth loss adversely affects patients’ health and psychosocial wellbeing. In addition, it changes mandibular morphology. Objective: To evaluate the effect of tooth loss, age, and gender on mandibular morphology.Material and MethodsCone-beam computed tomographic (CBCT) scans of 101 patients were examined to measure the gonial angle (GA), ramus height (RH) and condylar height (CH). Patients’ age, gender, and dental status were recorded. Repeated measures analysis of variance (ANOVA) was used to assess the impact of gender, age, and tooth loss on the GA, RH and CH. The mean measurements of the GA, RH and CH were compared between dentate/edentulous patients after splitting by gender.ResultsThe GA was larger in edentulous patients compared to dentate ones, in females than in males, and in older than in younger. RH on the right side was significantly longer than on the left side (P< 0.0001), and also longer in males and younger patients. CH was shorter in younger than in older patients and in dentate than in edentulous patients.ConclusionsTooth loss is associated with changes in mandibular morphology and its prevention would avoid these irreversible changes. Key words:Tooth loss, mandibular morphology, Cone-Beam computed tomography, gender, age.

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Section: Discussionsupporting

confidence: 93%

Influence of tooth loss on mandibular morphology: A cone-beam computed tomography study

et al. 2019

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“…Incisural and gonial angle values, which will contribute greatly to the treatment approaches of Temporamandibular joint disorders and in this area surgery, have not yet become clear when the literature is examined (10)(11)(12). There are many measurement studies of mandible morphology in the literature (10-16) Although there are some measurement studies based on gender and age of gonial angle, there is no clear data on incisural angle (15,16).…”

Section: Discussionmentioning

confidence: 99%

“…Incisure angle of the mandible is a wide notch between coronoid and processus condylar process. (11). This notch passes through veins and nerves, which are important in craniofacial surgery and general dentistry (1,11) The gonial angle of the mandible is the angle between the posterior boundary of the ramus of the mandible and the lower edge boundary of the mandible.…”

Section: Introductionmentioning

confidence: 99%

“…(11). This notch passes through veins and nerves, which are important in craniofacial surgery and general dentistry (1,11) The gonial angle of the mandible is the angle between the posterior boundary of the ramus of the mandible and the lower edge boundary of the mandible. It shows the relationship between the mandibular ramus and its body (10,11).…”

Section: Introductionmentioning

confidence: 99%

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The Morphometric Measurements of the Mandible; Gonial and Incisure Angles

Doğan¹,

Kaplanoğlu²,

Çalışır

et al. 2022

Preprint

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Background: The mandible, the largest and strongest bone in the face, is the only bone in the skull that does not have a sutural joint. Before starting surgical procedures and clinical approaches, it is necessary to know the anatomy of this region well. Materials and methods: It is a radiology-based morphometric study in which retrospectively scanned images of adult individuals in the 20-50 age range, whose results are normally reported using CT (Conical Beam Computed Tomography) {n=212}. Tomographic images, photographed with Planmeca ProMax3DMid ProFace brand CBCT device, was examined using the Planmeca Romexis 4.6.2.R licensed program. Mandibular incisure angle and gonial angle of the mandible were measured from those images. Gender and age-related comparisons were performed. Results: In all groups, the relationship between the right incisure angle and the right gonial angle was determined as a weak positive relationship, but was found to be statistically significant. The Gonial angle is larger in females on both sides of the jaw than in males. In the study of changes in correlation between mandibular incisure and gonial angle depending on age groups, a statistically significant positive correlation was found in the group that we can call young adults, while a significant difference was not observed in the middle age group and the group that we can call old age. Conclusions: Age and gender-based reference values of gonial angle of mandible and mandibular incisure angle were determined. It is the first study in the literature in which the size and shape of the Incisure angle is evaluated on a cross-population and gender basis. We believe that these angles will have many benefits from a clinical point of view.

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“…To analyze the degree of mucosal damage in the visual conventional groups, we took a picture of the inner surfaces of these anatomical structures using a camera that was affixed to a static support and positioned at a standardized distance. The damaged areas were then quantified using Image J software (National Institute of Health, Bethesda, Maryland, USA), which was able to easily discern different colors in the picture and analyze the damaged areas [15, 16]. After the operators completed the nasogastric tube insertion, we evaluated whether the nasogastric tube was misplaced or not using the real-time images of the VNGS.…”

Section: Methodsmentioning

confidence: 99%

Novel Visual Nasogastric Tube Insertion System: A Feasibility and Efficiency Study in a Manikin

Qiao-ya

Xie

et al. 2016

Gastroenterology Research and Practice

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Background. Conventional nasogastric tube placement is an essential clinical procedure; however, complications may arise from blind manipulation. We tested the feasibility and efficiency of a visual nasogastric tube insertion system (VNGS) using a manikin. Methods. A microimaging fiber (0.8 mm) was integrated into the nasogastric tube to create the VNGS. Twenty inexperienced physicians were enrolled and assigned to the visual or conventional group. Each physician performed 10 repeated nasogastric tube insertions with visual guidance or the conventional method; another 20 inexperienced medical students received nasogastric tube insertion training using visual guidance or the conventional method. Results. The nasogastric tube successfully reached the stomach and the narrow anatomic structures were visualized with the VNGS. Time required for insertion was significantly shorter in the visual group compared to the conventional group (22.56 ± 3.08 versus 37.30 ± 4.12 seconds, P < 0.001). Tube misplacement was observed in 19/100 cases (19%) in the conventional group; no misplacement was observed in the visual group. Less mucosal damage was noted in the visual group (3.43 ± 1.63 versus 9.86 ± 2.31 cm2). Medical students performed better NGT insertions (shorter insertion time and less procedure-related complications) after undergoing the visual guidance training. Conclusions. The VNGS may provide a new technique for nasogastric tube insertion applicable to clinical use or simulation training.

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Edentulousness in relation to remodeling of the gonial angles and incisures in dentate and edentate mandibles: morphometric study using the Image J software

Abstract: Edentulousness did not cause remodeling of the gonial angle of the mandible or in the mandibular incisure angle.

Cited by 8 publications

References 17 publications

Influence of tooth loss on mandibular morphology: A cone-beam computed tomography study

Influence of tooth loss on mandibular morphology: A cone-beam computed tomography study

The Morphometric Measurements of the Mandible; Gonial and Incisure Angles

Novel Visual Nasogastric Tube Insertion System: A Feasibility and Efficiency Study in a Manikin

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