Displaying publications 61 - 62 of 62 in total

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  1. A radiographic study on the visualization of the anterior loop in dentate subjects of different age groups
    Ngeow WC, Dionysius DD, Ishak H, Nambiar P
    J Oral Sci, 2009 Jun;51(2):231-7.
    PMID: 19550091
    The anterior loop is defined as where the mental neurovascular bundle crosses anterior to the mental foramen then doubles back to exit the mental foramen. It cannot be seen clinically but can be detected in 11-60% of panoramic radiographs. As this anatomical structure is important in determining the placement position of endosseous implants in the mandibular premolar region, a pilot study was undertaken to determine its visibility on dental panoramic radiographs in dentate subjects of various age groups. One or more anterior loops were visible in 39 (40.2%) radiographs encompassing 66 sites (34.4%). Interestingly, anterior loops were most commonly observed bilaterally, followed by on the right side of the mandible only. An anterior loop on the left side only was observed in just 1 radiograph. Visibility of anterior loops reduced as the age of subjects increased. More than half (58.1%) of subjects aged 20-29 years exhibited at least one anterior loop; this gradually reduced to only 15 percent of subjects aged 50 and older. There was no association between visualization of the anterior loop and subject gender.
    Matched MeSH terms: Radiography, Panoramic
  2. A Cross-sectional Study to Evaluate Nuclear Changes in Buccal Mucosa Following Panoramic Radiography
    Santhosh K, Manzoor S, Sushanth A, Seralathan S, Rajasekar V, Jacob A
    J Contemp Dent Pract, 2020 Nov 01;21(11):1258-1261.
    PMID: 33850072
    AIM AND OBJECTIVE: To evaluate the possible genotoxic effect of X-rays on buccal mucosa while exposing to dental panoramic radiography using micronucleus test.

    MATERIALS AND METHODS: The study group comprised of 30 healthy subjects, 15 males and 15 females, aged between 24 years and 65 years. Samples were obtained from the exfoliated oral mucosa cells of buccal mucosa before and 12 days after exposing the patients to panoramic radiography.

    RESULTS: The study reported that there was no significant increase in the number of micronuclei cells present before and after panoramic radiography. Positive correlation existed between age with pre- and postexposure micronuclei.

    CONCLUSION: Diagnostic dental panoramic radiograph does not induce micronuclei in the target buccal epithelium cells. A positive correlation between age and micronuclei frequency was established.

    CLINICAL SIGNIFICANCE: Panoramic radiographs does not induce cytotoxicity but increase frequency may be vulnerable to genotoxic effects in buccal mucosal cells. Hence, dental radiographs should be prescribed only when necessary.

    Matched MeSH terms: Radiography, Panoramic
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