Reliability of computational measurement of the condyles on digital panoramic radiographs

Momjian, Armen; Courvoisier, Delphine S.; Kiliaridis, Stavros; Scolozzi, Paolo

doi:10.1259/dmfr/83507370

Cited by 14 publications

(26 citation statements)

References 22 publications

(31 reference statements)

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“…36 The thresholds were a decrease of 0.16 mm 2 for area, 0.34 mm for perimeter, and 0.04 mm for height.…”

Section: Discussionmentioning

confidence: 93%

“…In the majority of cases, this association was found by using CT and by assessing qualitative changes, such as bone flattening, bone erosion, and osteophyte formation, rather than by quantifying dimensional changes. [31][32][33][34][35][36][37][38][39] Some investigators have suggested that untreated TMJ internal derangement, such as DD, as well as osteoarthritis could act as negative factors in postoperative outcomes for the TMJ. 5,6 Link and Nickerson found signs of arthrosisdbased on conventional radiographydin 50% of patients with a follow-up greater than 12 months after orthognathic surgery.…”

Section: Discussionmentioning

confidence: 99%

“…All condylar radiologic landmarks (area, perimeter, and height of each condyle) were measured by using our previously described and validated computational method 36 ( Figure 1). The measurements were made by two different investigators before surgery (t0) and 6 or 12 months after surgery (t1).…”

Section: Computer Image Analysismentioning

confidence: 99%

“…Studies on this particular association have mainly focused on methods of quantification of condylar changes with radiologic measurements, ranging from simple condylar height assessment on conventional radiographs to more sophisticated three-dimensional analysis using computed tomography (CT), cone beam CT (CBCT), and magnetic resonance imaging (MRI). [31][32][33][34][35][36][37][38][39] To the best of our knowledge, only one study has investigated the association between condylar bony changes and postoperative TMDs in patients with orthognathia, based on a three-dimensional analysis with CT. 28 However, the association between condylar morphologic changes, as measured with standard panoramic radiography, and postoperative TMDs in patients receiving combined orthodontic and orthognathic treatment and the predictive value of preoperative TMDs on postoperative condylar changes remain unreported.…”

mentioning

confidence: 99%

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Are condylar morphologic changes associated with temporomandibular disorders in patients with orthognathia?

Catherine

Courvoisier

Scolozzi

2016

Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

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Objective. To determine the association between morphologic condylar changes and temporomandibular disorders (TMDs) in patients with orthognathia. Study Design. Data from 89 patients were analyzed. TMDs were classified according to the Research Diagnostic Criteria for TMDs. TMD severity was scored according to the Helkimo indices. Calculation of the condylar area, perimeter, and height was performed by using a specific computational method including panoramic radiography. Results. Sixty-five (73%) patients presented with morphologic condylar changes. Decreases in condylar perimeter and area were found to be predictors of postoperative TMDs (P ¼ .009; odds ratio [OR] ¼ 3.66) and disk displacement (P ¼ .008; OR ¼ 4.43), respectively. Condylar area and height decreases were associated with worsening of TMDs (P ¼ .03 and 0.04).Conclusions. This study demonstrated that in orthognathic patients, postoperative condylar changes are associated with postoperative TMDs as well as with the degree of TMD severity and that preoperative TMDs are associated with such condylar changes. (Oral Surg Oral Med Oral Pathol Oral Radiol 2016;122:e44-e50) Temporomandibular joint disorder (TMD), an umbrella term for a number of disorders, is commonly found in the literature. [1][2][3] This term refers to various muscle and joint problems, among which myofascial pain dysfunction (MPD) and disk displacement (DD) or internal derangement represent, by far, the most frequent pathologic entities encountered routinely in the clinic.1-3 The association among TMDs, orthognathic surgery, and condylar morphologic changes continues to be an unresolved source of debate, as represented in the literature. [4][5][6][7][8][9][10][11][12][13][14][15][16] Some studies have shown a positive effect from surgery relative to preoperative TMD, whereas others have shown a negative outcome. [4][5][6][7][8][9][10][11][12][13][14][15][16] It has been shown that between 3.7% and 21% of patients with no TMDs before surgery will subsequently develop de novo postoperative TMDs. 4,7 Studies have tried to highlight clinical predictors of postoperative TMDs to screen at-risk patients; thus far, the only significant independent predictor has been anamnestic temporomandibular joint (TMJ) clicking. 16Although condylar morphologic and positional changes following orthognathic surgery have been extensively studied, this association remains unclear. [17][18][19][20][21][22][23][24][25][26][27][28][29] Two main categories of condylar morphologic changes have been reported, mainly based on differences between the right and left ramus height: condylar remodeling and condylar resorption. [17][18][19][20][21][22][23][24][25][26][27][28][29][30] Although the physiopathologic mechanism of such changes still remains obscure and thus largely speculative, it has been demonstrated that condylar resorption resulted in more severe clinical consequences, such as a high risk of developing an anterior open bite, compared with simple bone surface remodeling. 17,23,24,30 Conversely, the border...

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“…36 The thresholds were a decrease of 0.16 mm 2 for area, 0.34 mm for perimeter, and 0.04 mm for height.…”

Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Computer Image Analysismentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Are condylar morphologic changes associated with temporomandibular disorders in patients with orthognathia?

Catherine

Courvoisier

Scolozzi

2016

Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

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“…The details of the technique used for the condylar head height, perimeter and area calculation in the present series have been extensively described previously by Momjian et al 14 The measurements were made by the same investigator (AM) before surgery (m 1 ), 1 day after surgery (m 2 ) and 1 year after surgery (m 3 ).…”

Section: Computer Image Analysismentioning

confidence: 99%

Evaluation of condylar morphology following orthognathic surgery on digital panoramic radiographs. Could methodology influence the range of “normality” in condylar changes?

Scolozzi

Momjian²,

Courvoisier³

et al. 2013

Dentomaxillofacial Radiology

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Objectives: To evaluate the morphological condylar changes following orthognathic surgery by using a rapid and reliable computational method on panoramic radiographs. Methods: Digital panoramic radiographs of 45 patients who underwent bilateral sagittal split osteotomy (alone or associated with a Le Fort I osteotomy) between 2007 and 2010 were analysed. Calculation of the area, perimeter and height of 90 condyles was performed by using a specific computational method. Measurements were taken before surgery (m 1 ), 1 day after surgery (m 2 ) and 1 year after surgery (m 3 ). The evolution of each index was analysed using paired t-tests between measures before and 1 day after surgery (m 1 2 m 2 ) and measures before and 1 year after surgery (m 1 2 m 3 ). The changes in the condylar area, perimeter and height were examined using the Bland and Altman plotting method. Results: There were no statistically significant changes in the mean condylar area, perimeter or height between m 1 and m 2 or between m 1 and m 3 . The Bland and Altman plots for each index showed that a very limited number of condyles increased or decreased in area, perimeter and/or height outside the boundaries of the measurement error. Given the impossibility for a condyle to increase in size, these results are considered to represent the limits of the computational method used. Conclusions: This study demonstrated that there were no significant morphological condylar changes at the 1-year follow-up following surgery and that the range of normality in condylar changes could be influenced by the methodology used. Dentomaxillofacial Radiology (2013Radiology ( ) 42, 20120463. doi: 10.1259 Cite this article as: Scolozzi P, Momjian A, Courvoisier D S, Kiliaridis S. Evaluation of condylar morphology following orthognathic surgery on digital panoramic radiographs. Could methodology influence the range of "normality" in condylar changes? Dentomaxillofac Radiol 2013; 42: 20120463.

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Reliability and validity of mandibular posterior vertical asymmetry index in panoramic radiography compared with cone-beam computed tomography

Lim

Chung

Lee

et al. 2018

American Journal of Orthodontics and Dentofacial Orthopedics

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Reliability of computational measurement of the condyles on digital panoramic radiographs

Cited by 14 publications

References 22 publications

Are condylar morphologic changes associated with temporomandibular disorders in patients with orthognathia?

Are condylar morphologic changes associated with temporomandibular disorders in patients with orthognathia?

Evaluation of condylar morphology following orthognathic surgery on digital panoramic radiographs. Could methodology influence the range of “normality” in condylar changes?

Reliability and validity of mandibular posterior vertical asymmetry index in panoramic radiography compared with cone-beam computed tomography

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