Clinical trial NCT03932357: Measuring Soft Tissue Thickness by CBCT
Official title: Accuracy of Cone Beam Computed Tomography in Measuring of Mandibular Pig Soft Tissue Thickness Using a Radiopaque Material in Comparesion With Real Measurement.Diagnostic Study
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: Cone Beam Computed Tomography
Lead sponsor: Cairo University
Sponsor class: OTHER
First posted: 2019-04-30
Enrollment: 15
Sex: ALL
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: CASE_ONLY
Time perspective: CROSS_SECTIONAL
Sampling method: PROBABILITY_SAMPLE
Study population: CBCT measuring soft tissue thickness using a radiopaque material

Brief summary: accuracy of CBCT in measuring soft tissue thickness by using a radiopaque material as the real finding and measurements on pig jaws

Detailed description: * Pig jaws will be included in this study.
* Soft tissue surfaces were lightly covered with barium sulfate powder using a powder spray. CBCT was taken.
* A periodontal probe and a rubber stop were used for the measurement of trans-gingival probing thickness (TPT).
* After that, flap were elevated, and actual thickness of soft-tissue (actual thickness, AT) was measured.

The Analytical phase:

* In order to assess soft tissue thickness and bone levels an electronic digital caliper (Shenhan Measuring Tools Co., LTD, Shanghai) will used for measuring the transgingival probing thickness on the pig jaws.
* A graduated Naber's probe will be used for measuring the transgingival probing thickness.

Soft tissue thickness measurements:

* Intra-observer variability was tested under the supervision of the director.
* For the measurement of radiographic thickness (RT), wet soft tissue surfaces were covered with barium sulfate powder (SoloTop; Taejoon, Seoul, Korea), a radiopaque material used as a contrast medium.
* A probes and rubber stop were used for the measurement of transgingival probing thickness (TPT).
* A rubber stop was placed in contact with the surface to facilitate the measurement of tissue thickness, and then TPT was measured with digital calipers. All measurements were rounded to the nearest 0.01 mm.
* For the measurement of actual thickness (AT), an incision was made onto each marked area. After ﬂap elevation, actual soft tissue thickness was measured using the same method that was used for TPT.

Radiographic examination

* The pig jaws will then be imaged with CBCT.
* CBCT scanning will be performed using a PROMAX R 3DMid CBCT device (Planmeca Oy, Helsinki, Finland) with scanning protocol 90 kVp, 8 mA and 13.58 seconds exposure time with a single 360 degree rotation ROMEXIS software. The jawes will be placed on the horizontal plate of the device. The midline and mandibular position will be adjusted using the laser guide

Eligibility criteria: Inclusion Criteria:

* The study samples will not identified by age or gender group.
* The selected pig jaw should be intact with no mechanical damage.
* jaw with attached natural teeth

Exclusion Criteria:

* Teeth with anomalies and fractures.
* Periodontally affected teeth

Primary outcomes:
measure: cbct
timeFrame: 6 months
Secondary outcomes:
measure: Acutal thickness measurement
timeFrame: 6 months
Other outcomes:
Locations:
city: Cairo
country: Egypt
facility: Mahinaz Reda Hassan
state: Giza-elharam
Study officials:
References: