A Retrospective Cone Beam Computed Tomography Study of The Lateral Wall Bony Window

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

1000 participants

Study Classification

OBSERVATIONAL

Study Start Date

2019-09-01

Study Completion Date

2020-12-31

Brief Summary

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Three experienced observers were asked to screen all the CBCT images from the Stomatology Hospital,Zhejiang University School of Medicine, between September 1, 2019 and December 31, 2019, and counted 1000 maxillary sinus CBCT images that met the criteria. Later, 1000 CBCT images were further measured and analyzed, and indicators such as maxillary sinus buccal wall thickness, morphology, whether there is blood vessel or not, whether there is bone septa or not were counted. The variation rules and related factors were summarized by SPSS analysis.

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Detailed Description

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Conditions

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Lateral Wall Thickness

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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cross-sectional

To analyze the maxillary sinus anatomy over edentulous ridges in the bilateral posterior maxillary area in Chinese patients using cone-beam computed tomography (CBCT).

No intervention

Intervention Type OTHER

Just observation

Interventions

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No intervention

Just observation

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Images were included if the following criteria were met: (1) patients were 18 years or older, (2) presence of teeth adjacent to or opposing the edentulous area allowing the location of the edentulous ridges corresponding to the tooth site to be identified, (3) presence of maxillary dentition defect in any tooth positon of the second premolar, the first molar or the second molar, (4) the maxillary sinus to be measured was visible from its floor to at least 15 mm high.

Exclusion Criteria

* Images were excluded if any of the following criteria were met: (1) images were unclear or incomplete due to scattering or other reasons, (2) pristine maxillary posterior extraction sites after less than 3 months of healing and the tooth extraction sockets could be obviously identified, (3) the maxillary sinus had been grafted for implant-supported prosthesis, (4) implants or other prosthetic devices were present in maxillary posterior edentulous position, (5) orthodontic brackets and wires in images were present; (6) the location of the edentulous sites could not be determined, (7) sinus pathology was present that made the measurement impossible.

Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes