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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Is CBCT Helpful in Estimating the Risk for Oroantral Communication During Maxillary Posterior Tooth Extraction?

Yu-Ting Ma1, Rui Sun2, Rong Wang3

  • 1Resident, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China.

Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons
|August 29, 2025
PubMed
Summary
This summary is machine-generated.

Cone beam computed tomography (CBCT) effectively identifies oroantral communication (OAC) risk by detecting sinus floor defects. Periapical imaging is less reliable for predicting OAC during maxillary tooth extraction.

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Area of Science:

  • Dentistry
  • Oral and Maxillofacial Surgery
  • Radiology

Background:

  • Oroantral communication (OAC) is a common complication after maxillary posterior tooth extraction.
  • The diagnostic value of different imaging modalities for identifying OAC risk is not well-established.

Purpose of the Study:

  • To assess the association between periapical radiography and cone beam computed tomography (CBCT) findings with OAC occurrence.
  • To evaluate the clinical necessity of CBCT in managing OAC risk during maxillary posterior tooth extraction.

Main Methods:

  • A retrospective cohort study analyzed 69 patients undergoing maxillary posterior tooth extraction.
  • Radiographic risk factors for OAC were evaluated using periapical images and CBCT.
  • Statistical analyses, including odds ratios (ORs) with 95% confidence intervals (CIs), were performed.

Main Results:

  • Five cases (7.2%) of OAC were observed.
  • Periapical imaging findings (root apex overlap or protrusion) were not significantly associated with OAC.
  • CBCT-identified maxillary sinus floor continuity defects showed a significant association with OAC (OR = 2.9, P = .0072).

Conclusions:

  • Maxillary sinus floor bone continuity defects visualized on CBCT are associated with OAC.
  • Periapical radiography is insufficient for predicting OAC risk.
  • CBCT is recommended when root protrusion into the sinus is suspected, but may be unnecessary if only root overlap is present.