Evaluation of Mental Index, Mandibular Cortical Index and Panoramic Mandibular Index on Dental Panoramic Radiographs in the Elderly

Haştar, Esin; Yılmaz, H. Hüseyin; Orhan, Hikmet

doi:10.1055/s-0039-1698859

Cited by 79 publications

(68 citation statements)

References 34 publications

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“…In our study, neither of the groups had any significant correlation between the right PMI value and age, however found a weak but statistically significant correlation between the left PMI value and age in only healthy individuals. The data we obtained was not consistent with the data from Dagistan & Bilge (2010), Ledgerton et al, Gulsahi et al (2008), Hastar et al (2011), andKnezovic´ Zlataric´ et al (2002). This inconsistency might be explained due to difference in studied sample groups and uneven dispersion of individuals in the age groups.…”

Section: Discussioncontrasting

confidence: 95%

Evaluation of Mandibular Morphometry in the Bisphosphonate Users

Tanrikol¹,

Mağat

2019

Int. J. Morphol.

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This study aimed to evaluate the effects of bisphosphonates on the mandibular bone. Bisphosphonates are drugs which are commonly used in the treatment of many diseases related to bone metabolism such as osteoporosis, breast cancer capable of bone metastasis, prostate and lung cancer and bone cancer such as multiple myeloma. Our study group consisted of a total of 100 panoramic radiographs which were obtained from the examinations of 50 individuals using bisphosphonate and 50 individuals in the control group who applied for routine dental examination to the Department of Oral and Maxillofacial Radiology of Akdeniz University Dentistry Faculty between years 2015 and 2016.The calculations of the mandibular cortical thickness (MCT), mandibular cortical index (MCI), panoramic mandibular index (PMI), condylar angle (CA), gonial angle (GA), antegonial angle (AGA), antegonial depth (AGD) and antegonial index (AGI) were made for each patient. It was found that both left and the right MCT and only the left PMI were affected by age. Only the left AGA and both the left and right MCT and AGD were affected by gender. The left and right AGI measurements of the patients using bisphosphonates were statistically lower than those of the individuals in the control group. Our results suggested that bisphosphonates had various effects on the jaw bones. However, further comprehensive studies need to be made to evaluate the longterm effect of bisphosphonates on bone metabolism.

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Section: Discussioncontrasting

confidence: 95%

Evaluation of Mandibular Morphometry in the Bisphosphonate Users

Tanrikol¹,

Mağat

2019

Int. J. Morphol.

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“…Hastar et al17 reported that MCW, the MCI, and the PMI exhibited statistically significant differences between patients with and without osteoporosis. However, Klemetti et al8 suggested that the correlation between bone mineral density and the PMI was weak.…”

Section: Discussionmentioning

confidence: 99%

Is the panoramic mandibular index useful for bone quality evaluation?

Kwon

Huh

et al. 2017

Imaging Sci Dent

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PurposeThe aim of this study was to determine whether the panoramic mandibular index (PMI) is useful for assessing bone mineral density. We also analyzed the potential correlations between PMI parameters and patient age.Materials and MethodsFour observers measured the PMI of both sides of the mental foramen using a picture archiving and communication system and images in the Digital Imaging and Communications in Medicine format. They studied 300 panoramic radiographic images of patients belonging to the following age groups: 40–49 years, 50–59 years, 60–69 years, 70–79 years, and 80–89 years. The observers were allowed to zoom in or out and to adjust the contrast of the images. Further, they were instructed to record the reasons for any measurements that could not be made. Then, we conducted a reliability analysis of the measured PMI and assessed the correlations between different patient age groups and the 3 parameters used for determining the PMI from the available data.ResultsAmong the 600 data items collected, 23 items were considered unmeasurable by at least 1 observer for the following 4 reasons: postoperative state, lesion, unidentified mental foramen, and alveolar bone loss. The intraobserver reproducibility of the measurable data was 0.611-0.752. The mandibular cortical width (MCW) decreased significantly as patient age increased.ConclusionPMI had limited usability when the margin of the mental foramen was not clear. In contrast, MCW, a parameter used for determining the PMI, had fewer drawbacks than the PMI with respect to bone mineral density measurements and exhibited a significant correlation with patient age.

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“…These radiomorphometric parameters have been extensively used in previous studies, especially those related to low bone mineral density. (7) All of the panoramic radiographs examined in the present study were captured using the same radiograph machine, and the same software that was recommended by the manufacturer. In this manner, discrepancies in magnification caused by variations in the settings of different machines were avoided.…”

Section: Discussionmentioning

confidence: 99%

“…(3) Dental panoramic radiography is useful as a routine procedure in implant therapy. (1,(4)(5)(6)(7) In some cases, not only the implant sites but also the gonial angle (GA), inferior lower cortical bone under the mental foramen, floor of the maxillary sinus, mandibular canal, and mandibular condyle are the focus of implant therapy screening. (8)(9)(10)(11)(12)(13) Factors such as age, gender, and dental status of the patient, whether they wear partial or complete dentures, and how long have worn them must determine when morphological changes of the mandible are assessed on a dental panoramic radiograph.…”

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confidence: 99%

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

Mirbeigi¹,

Khojastepour²,

Ezoddini³

2014

3dj

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The purpose of the present study was to determine the possible relationship between gonial angle size and three mandibular morphometric parameters, namely, panoramic mandibular index (PMI), mandibular cortical width (MCW), and antegonial notch depth (AD), in digital panoramic radiographs. Materials and methods: PMI, MCW, and AD were calculated in digital panoramic radiographs of 370 dentulous adult subjects with a mean age of 44.2 years and a mean number of remaining teeth of 23.49 ± 7.71. The differences between the mean values of measured parameters were compared between males and females, among various age groups, and between subjects with low and high gonial angles (gonial angle of ≤120 and ≥125, respectively). The correlation between gonial angle size, PMI, MCW, and AD was also evaluated. T-test, ANO-VA, and Pearson's correlation test were used for statistical analysis. A P<0.05 was considered as statistically significant. Results: PMI, AD, and MCW(Mandibular Cartical Width) were significantly higher in subjects with low gonial angle (LGA) than those with high gonial angle (HGA). PMI, AD, and MCW were also significantly higher in males than those in females. Significantly negative correlations between the gonial angle and PMI, AD, and MCW were also observed. Conclusion: The mandibular radiomorphometric parameters of PMI, AD, and ACW are related to sex and gonial angle size.

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Evaluation of Mental Index, Mandibular Cortical Index and Panoramic Mandibular Index on Dental Panoramic Radiographs in the Elderly

Cited by 79 publications

References 34 publications

Evaluation of Mandibular Morphometry in the Bisphosphonate Users

Evaluation of Mandibular Morphometry in the Bisphosphonate Users

Is the panoramic mandibular index useful for bone quality evaluation?

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

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