Investigation of mandibular fractal dimension on digital panoramic radiographs in bruxist individuals

ENİNANÇ, İlknur; Yeler, Defne Yalçın; Çınar, Ziynet

doi:10.1016/j.oooo.2021.01.017

Cited by 18 publications

(18 citation statements)

References 40 publications

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“…It is thought that this result, which is different from authors' finding, may be due to continued growth and development in paediatric patients. In the same way, Eninanç et al 30 used the FA method to examine the mandibular bone of adult bruxism patients. Although there was a significant difference in the FD value in the angulus region, there was no significant difference in other regions, according to their findings.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of mandibular trabecular bone by fractal analysis on panoramic radiograph in paediatric patients with sleep bruxism

Kolçakoğlu

Amuk

Sarıbal

2022

Int J Paed Dentistry

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Objective To evaluate the trabecular bone density in the mandible of paediatric patients diagnosed with sleep bruxism (SB) using the fractal analysis method on panoramic radiographs. Methods A total of 37 patients whose anamnesis and clinical signs were compatible with SB were diagnosed with SB using BiteStrip®. Three areas were identified on the panoramic radiographs of the patients: the geometric center of the condyle, the angulus region under the mandibular canal, and the distal region of the mental foramen. Regions of interest (ROIs) of 60 × 60 pixels were selected in these three locations, and fractal dimensions (FDs) were calculated. Results were compared with the control group. Results There was no statistically significant difference between the right and left FD values, and male and female FD values in all regions and both groups (p > .05). In the angulus (p = .03) and condyle (p = .03) regions, the SB group had a significantly higher FD value than the control group. There was no statistically significant difference between the SB and control groups in the corpus region (p = .98). A moderate negative correlation arose between age and condyle FD values among controls (r = −0.38, p = .02). Conclusion Fractal dimension values evaluating trabeculation of the mandibular bone are affected by SB in the angulus and condyle regions.

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Section: Discussionmentioning

confidence: 99%

Evaluation of mandibular trabecular bone by fractal analysis on panoramic radiograph in paediatric patients with sleep bruxism

Kolçakoğlu

Amuk

Sarıbal

2022

Int J Paed Dentistry

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“…1,17 In our study, individuals with a probable diagnosis of bruxism were selected based on individual anamnesis and intraoral clinical findings (such as tooth wear, linea alba prominence, teeth marks on the cheek and tongue margins), which are frequently reported as the preferred method in the studies. 5,9,23 As stated by Türp et al 2 a recent study, the pterygoid medial and masseter muscles, which undertake 65% of the masticatory muscle activation, are attached to the mandible angle region. While these muscles apply a force between 50 and 150 N in normal activation, it has been reported this force increases to 1200-1500 N in parafunctional situations.…”

Section: Discussionmentioning

confidence: 92%

“…In addition, FA can be used in the follow-up of the review after the treatment of the patients. 9 For the identification of bone architecture and trabecular pattern, osseous FA, which quantifies the bone marrow and trabecular bone interface, has been reported as a useful method providing reliable and accurate results. 10,11 This study aimed to compare the trabecular internal structure of different regions of the mandible according to the grades of appositional classification in the mandible angle region in probable bruxist individuals and non-bruxist G0 individuals by measuring FD on panoramic radiographs.…”

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confidence: 99%

Comparative evaluation of trabecular bone structures of bruxist and non‐bruxist individuals with bone apposition in the mandible angle region by fractal analysis

Kurt

Yılmaz

Evli

et al. 2023

J of Oral Rehabilitation

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Objective This study aimed to compare the trabecular internal structure of different regions of the mandible according to the grades of appositional classification in the mandible angle region in probable bruxist individuals and non‐bruxist G0(Convex course of the basal cortex, no directional change, no bone apposition) individuals by measuring fractal dimension (FD) on panoramic radiographs. Methods 200 sample jaws, bilaterally, of 80 probable bruxists and 20 non‐bruxist G0 individuals were included in the study. According to the classification in the literature, each mandible angle apposition severity was classified as G0‐G1‐G2‐G3. FD was calculated by selecting the region of interest (ROI) area of 7 regions from each sample. Gender differences in changes between ROIs in radiographs and independent samples t‐test were evaluated. Relation between categorical variables was determined by chi‐square test (p < .05). Results In the comparison of the probable bruxist and non‐bruxist G0 groups, FD was found to be statistically significantly higher in the mandible angle (p = 0.013) and cortical bone (p = 0.000) regions in the probable bruxist group than in the non‐bruxist G0 group. There is a statistically significant difference between probable bruxist G0 and non‐bruxist G0 grades in terms of FD averages in cortical bone (p < 0.001). A statistically significant difference was found in the relationship of ROIs with gender in canine apex (p = 0.021) and canine distal (p = 0.041) regions. Conclusion FD was found to be higher in the mandibular angle region and cortical bone in probable bruxist individuals than in non‐bruxist G0 individuals. Morphological changes seen in the mandible angulus region may be a finding that may raise suspicion for bruxism for clinicians.

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“…As a reliable tool, dental panoramic radiographs are frequently used for fractal dimension measurements. [23][24][25] In the current study, the fractal analysis method was chosen for measuring the degree of bone mineralization since it is cost-effective and does not require additional exposure to radiation. The "box counting" method [7], which is a widely employed and convenient method for fractal analysis, was used in this study.…”

Section: Discussionmentioning

confidence: 99%

Fractal Analysis of Mandibular Trabecular Structure in Individuals with Different Vertical Dentofacial Skeletal Patterns

Büyükbayraktar

Büyük

Korkmaz

et al. 2023

Preprint

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Background: Different vertical dentofacial skeletal patterns may affect bone density of the temporomandibular joint (TMJ) and various mandibular structures. This study aimed to examine changes in mandibular trabecular structure in vertical dentofacial patterns using fractal analysis. Methods: Dental-skeletal Class I patients randomly selected from the university orthodontic clinic were allocated into 3 groups (low angle, normal angle and high angle) according to the SN-GoMe angle. Bone density of mandibular structures (corpus, angulus and condyle) were measured bilaterally on panoramic radiographs of the patients using fractal analysis. Results: Left condylar fractal dimension (FD) measurements differed significantly among the groups (p=.041). Compared to other groups, left condylar FD values were lower in the high angle group. Right and left mandibular angulus FD values were lower in the low angle group but the difference was non-significant (p>.05). Within-group comparisons showed a significant difference in FD values between right and left corpus in the low angle subjects (p=.047). Conclusion: Lower mandibular condylar FD values observed in high angle subjects may herald possible joint disorders. Low angle subjects exhibit lower FD values in the mandibular angulus. This may be related to degenerative changes in that region characterized by reduced bone density which results from increased muscle activity.

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Investigation of mandibular fractal dimension on digital panoramic radiographs in bruxist individuals

Cited by 18 publications

References 40 publications

Evaluation of mandibular trabecular bone by fractal analysis on panoramic radiograph in paediatric patients with sleep bruxism

Evaluation of mandibular trabecular bone by fractal analysis on panoramic radiograph in paediatric patients with sleep bruxism

Comparative evaluation of trabecular bone structures of bruxist and non‐bruxist individuals with bone apposition in the mandible angle region by fractal analysis

Fractal Analysis of Mandibular Trabecular Structure in Individuals with Different Vertical Dentofacial Skeletal Patterns

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