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Can pterygoid plate asymmetry be linked to temporomandibular joint disorders?

Guerrero ME, Beltran J, de Laat A, Jacobs R - Imaging Sci Dent (2015)

Bottom Line: Statistically significant differences were found between measurements of the lateral pterygoid plates on the site that had pain and the contralateral site (p<0.05).Statistically significant differences in the LPP length, measured on CBCT, were found between patients with and without TMD (p<0.05).Within the limits of the present study, CBCT lateral pterygoid plate measurements at the side with TMD were found to be significantly different from those on the side without TMD.

View Article: PubMed Central - PubMed

Affiliation: OIC, OMFS IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven and Oral and Maxillofacial Surgery, University Hospitals Leuven, Belgium.

ABSTRACT

Purpose: This study was performed to evaluate the relationship between pterygoid plate asymmetry and temporomandibular joint disorders.

Materials and methods: Cone-beam computed tomography (CBCT) images of 60 patients with temporomandibular disorders (TMD) involving pain were analyzed and compared with images of 60 age- and gender-matched controls. Three observers performed linear measurements of the lateral pterygoid plates.

Results: Statistically significant differences were found between measurements of the lateral pterygoid plates on the site that had pain and the contralateral site (p<0.05). The average length of the lateral pterygoid plates (LPPs) in patients with TMD was 17.01±3.64 mm on the right side and 16.21±3.51 mm on the left side, and in patients without TMD, it was 11.86±1.97 mm on the right side and 11.98±1.85 mm on the left side. Statistically significant differences in the LPP length, measured on CBCT, were found between patients with and without TMD (p<0.05). The inter-examiner reliability obtained in this study was very high for all the examiners (0.99, 95% confidence interval: 0.98-0.99).

Conclusion: Within the limits of the present study, CBCT lateral pterygoid plate measurements at the side with TMD were found to be significantly different from those on the side without TMD. More research is needed to explore potential etiological correlations and implications for treatment.

No MeSH data available.


Related in: MedlinePlus

Sagittal cone-beam CT image shows the midsagittal plane and the long axis of the palatal plane selected in order to obtain a proper axial view of the outer wings of the bilateral pterygoid tubercle.
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Figure 2: Sagittal cone-beam CT image shows the midsagittal plane and the long axis of the palatal plane selected in order to obtain a proper axial view of the outer wings of the bilateral pterygoid tubercle.

Mentions: For visualizing the cases, the ICAT Vision™ i-CAT software was used (Imaging Sciences International, Hatfield, PA, USA). Measurement tools were used for assessing the length of the LPP. The slice thickness was 0.4 mm. Further, the multiplanar reformation display was explored. Three observers evaluated all images independently and made linear measurements of the pterygoid plates in an axial view, referring to the coronal and sagittal view. First, the midsagittal plane and the nasal cavity floor plane were selected on the coronal view (Fig. 1). Second, the midsagittal plane and the long axis of the palatal plane were selected on the sagittal view in order to obtain a proper axial view of the outer wings of the bilateral pterygoid tubercle (Fig. 2). Measurements were made from the distal point of the lateral pterygoid plate to the medial and lateral pterygoid plate junction (Fig. 3).


Can pterygoid plate asymmetry be linked to temporomandibular joint disorders?

Guerrero ME, Beltran J, de Laat A, Jacobs R - Imaging Sci Dent (2015)

Sagittal cone-beam CT image shows the midsagittal plane and the long axis of the palatal plane selected in order to obtain a proper axial view of the outer wings of the bilateral pterygoid tubercle.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4483625&req=5

Figure 2: Sagittal cone-beam CT image shows the midsagittal plane and the long axis of the palatal plane selected in order to obtain a proper axial view of the outer wings of the bilateral pterygoid tubercle.
Mentions: For visualizing the cases, the ICAT Vision™ i-CAT software was used (Imaging Sciences International, Hatfield, PA, USA). Measurement tools were used for assessing the length of the LPP. The slice thickness was 0.4 mm. Further, the multiplanar reformation display was explored. Three observers evaluated all images independently and made linear measurements of the pterygoid plates in an axial view, referring to the coronal and sagittal view. First, the midsagittal plane and the nasal cavity floor plane were selected on the coronal view (Fig. 1). Second, the midsagittal plane and the long axis of the palatal plane were selected on the sagittal view in order to obtain a proper axial view of the outer wings of the bilateral pterygoid tubercle (Fig. 2). Measurements were made from the distal point of the lateral pterygoid plate to the medial and lateral pterygoid plate junction (Fig. 3).

Bottom Line: Statistically significant differences were found between measurements of the lateral pterygoid plates on the site that had pain and the contralateral site (p<0.05).Statistically significant differences in the LPP length, measured on CBCT, were found between patients with and without TMD (p<0.05).Within the limits of the present study, CBCT lateral pterygoid plate measurements at the side with TMD were found to be significantly different from those on the side without TMD.

View Article: PubMed Central - PubMed

Affiliation: OIC, OMFS IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven and Oral and Maxillofacial Surgery, University Hospitals Leuven, Belgium.

ABSTRACT

Purpose: This study was performed to evaluate the relationship between pterygoid plate asymmetry and temporomandibular joint disorders.

Materials and methods: Cone-beam computed tomography (CBCT) images of 60 patients with temporomandibular disorders (TMD) involving pain were analyzed and compared with images of 60 age- and gender-matched controls. Three observers performed linear measurements of the lateral pterygoid plates.

Results: Statistically significant differences were found between measurements of the lateral pterygoid plates on the site that had pain and the contralateral site (p<0.05). The average length of the lateral pterygoid plates (LPPs) in patients with TMD was 17.01±3.64 mm on the right side and 16.21±3.51 mm on the left side, and in patients without TMD, it was 11.86±1.97 mm on the right side and 11.98±1.85 mm on the left side. Statistically significant differences in the LPP length, measured on CBCT, were found between patients with and without TMD (p<0.05). The inter-examiner reliability obtained in this study was very high for all the examiners (0.99, 95% confidence interval: 0.98-0.99).

Conclusion: Within the limits of the present study, CBCT lateral pterygoid plate measurements at the side with TMD were found to be significantly different from those on the side without TMD. More research is needed to explore potential etiological correlations and implications for treatment.

No MeSH data available.


Related in: MedlinePlus