So sánh phương pháp

	Kỹ thuật chụp X-quang cánh cắn	Xác định chiều dài ống tủy
Lĩnh vực	Nha khoa	Nha khoa
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1913 (original technique)	1920s (radiography); 1960s (electronic)
Người khởi xướng	Multiple innovators, formalized in 20th century	Multiple innovators (radiographic and electronic methods)
Loại	Radiographic examination	Diagnostic and measurement procedure
Công trình gốc	Ludlow, J. B., Davies-Ludlow, L. E., Brooks, S. L., & Howerton, W. B. (2006). Dosimetry of 3 intraoral digital imaging systems. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology, 101(2), 226-234.	Ingle, J. I., Bakland, L. K., & Baumgartner, J. C. (2008). Endodontics (6th ed.). BC Decker.
Tên gọi khác	bitewing X-ray, bitewings, posterior radiography	working length measurement, WL determination, electronic apical locator, periapical radiography
Liên quan	4	3
Tóm tắt	Bitewing radiography is a standard intraoral radiographic technique that captures the coronal portions of both maxillary and mandibular teeth in a single image, with the patient biting on a film holder or digital sensor. Introduced in the early 20th century and formalized as a diagnostic standard, bitewing radiographs are the primary image type for detecting approximal caries, monitoring alveolar bone level for periodontal disease assessment, and evaluating dental restorations and radiographic density changes. Digital bitewings have reduced radiation exposure and improved image quality and archiving.	Root canal length determination (working length) is a critical procedural step in endodontic therapy that establishes the precise depth to which instrumentation, irrigation, and obturation should extend within the root canal system. Modern approaches combine electronic apical locators (EAL) with radiographic verification to accurately locate the apical foramen and establish the working length. Accurate working length determination is essential for successful endodontic treatment, preventing under-instrumentation (leaving infected material) and over-instrumentation (causing periapical inflammation).