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

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT06309706

Enrollment

1000

Registered

2024-03-13

Start date

2019-09-01

Completion date

2020-12-31

Last updated

2024-03-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Lateral Wall Thickness

Brief summary

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.

Interventions

OTHERNo intervention

Just observation

Study design

Observational model

CASE_ONLY

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

18 Years to 80 Years

Healthy volunteers

Yes

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.

Design outcomes

Primary

Measure	Time frame	Description
Lateral wall thickness	2019-09-01~2019-12-31	The thickness of the maxillary sinus lateral wall

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026