CBCT analysis of factors affecting maxillary sinus pneumatization following posterior tooth extraction: a retrospective study

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Maxillary sinus pneumatization following posterior tooth extraction is significantly greater in second molar sites, cases with pre-extraction residual bone height under 10 mm, and extractions performed without alveolar ridge preservation. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Soo-yeon Shin; Seong‐Nyum Jeong; Yeon‐Tae Kim

doi:10.14368/jdras.2026.42.3.200

August 31, 2026Journal of Dental Rehabilitation and Applied ScienceOpen Access

CBCT analysis of factors affecting maxillary sinus pneumatization following posterior tooth extraction: a retrospective study

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Key Points

To quantify maxillary sinus pneumatization following posterior tooth extraction using cone-beam computed tomography and identify clinical factors associated with the expansion.
Retrospective analysis evaluated pre-extraction (T0) and post-extraction (T1, ≥3 months) CBCT scans from 50 patients across 63 extraction sites.
Assessed tooth position, root and sinus contour types, baseline residual alveolar bone height (RBH), and the use of alveolar ridge preservation (ARP) against change in sinus pneumatization height (∆SPH).
Mean ∆SPH across all 63 sites was 0.29 ± 0.52 mm, with extraction-only sites averaging 0.44 ± 0.42 mm (n=50) versus -0.06 ± 0.16 mm at sites receiving ARP (n=13).
Sites with pre-extraction RBH < 10 mm exhibited significantly greater pneumatization than sites with RBH ≥ 10 mm, showing a significant negative correlation between baseline RBH and ∆SPH.
Extraction of second molars resulted in significantly greater sinus pneumatization compared to extraction of first molars.

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Implication

Retrospective study identifies predictors of maxillary sinus pneumatization after tooth extraction, showing alveolar ridge preservation limits bone loss.

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Shin et al. (2026) studied this question.

synapsesocial.com/papers/6a9934cf636c6408cfa7c89a https://doi.org/10.14368/jdras.2026.42.3.200

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CBCT analysis of factors affecting maxillary sinus pneumatization following posterior tooth extraction: a retrospective study

Key Points

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Implication

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Cite This Study

CBCT analysis of factors affecting maxillary sinus pneumatization following posterior tooth extraction: a retrospective study

Key Points

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Implication

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Cite This Study

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