A technical report on the hamular technique for radiographing maxillary anterior teeth using a digital sensor

Area of Science:

• Dentistry
• Radiology
• Medical Imaging

Background:

• Obtaining intraoral periapical radiographs of maxillary anterior teeth is challenging due to patient anatomy, specifically the palatal vault.
• Traditional techniques may be limited by the inability of rigid digital sensors to fit comfortably, impacting image quality and diagnostic potential.

Purpose of the Study:

• To present and evaluate a novel hamular technique (HT) for intraoral periapical radiography of maxillary anterior teeth.
• To assess the HT's ability to overcome spatial restrictions in the palatal vault and achieve minimally distorted radiographic images.

Main Methods:

• The hamular technique (HT) involves placing the radiographic sensor in the space surrounding the hamular notch.
• Four adult patients and a human skull were used to demonstrate the technique's quantitative and qualitative features, including magnification and image quality.
• Comparisons were made with the variable-angle technique (VAT), a clinical approximation of the bisecting angle technique.

Main Results:

• HT radiographs showed less distortion compared to VAT, with one implant radiograph exhibiting virtually no distortion.
• Magnification ranged from 7.9-21.6% in HT images, and images were noted to be slightly lighter and less sharp than VAT.
• Despite variations in image quality, HT radiographs were deemed diagnosable for caries.

Conclusions:

• The hamular technique (HT) offers a viable alternative for obtaining minimally distorted intraoral periapical radiographs of maxillary anterior teeth in patients with limited palatal space.
• While magnification and slight reductions in image sharpness were observed, the reduced distortion is a significant advantage for diagnostic accuracy.
• Further research is warranted, but the HT shows potential for improving radiographic imaging in challenging anatomical situations.