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Status unknownNCT03270618Updated Sep 1, 2017

Accuracy of a CAD/CAM Surgical Template for Mandible Distraction

An interventional study of CAD/CAM Surgical Template in Facial Asymmetry, Mandible; Hypoplasia, Unilateral Condylar and Distraction of Bone, sponsored by Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University. Status unknown at 1 site in China. Open to participants aged 6 Years to 60 Years. Per ClinicalTrials.gov, last updated 2017-09-01.

Sponsored by Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Aug 2017), so the status shown — last known as Recruiting — may be out of date.

From the registry’s dates

  • Registered 3 years 7 months after the study started (first participant enrolled Jan 2014, registered Aug 2017).
Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Not applicable
Ages
6 Years to 60 Years
Sex
All
01

Study summary

The purpose was to assess the accuracy and clinical validation of virtual planning and surgical template in mandible distraction osteogenesis. Patients with hemifacial microsomia were enrolled. Virtual planning and simulation were performed on three-dimensional models. Distraction was simulated on virtual model and the new morphology of the mandible was predicted. The position and direction of the distractor was determined to achieve the optimal morphology. The templates were designed based on virtual planning and manufactured using three-dimensional printing technique. The template is designed to assist the surgeon to perform the osteotomy and predrill the screw holes to guide the distractor position. The outcome evaluation was completed by comparing planned outcomes with postoperative outcomes. Linear and angular differences for the distractor was measured.

02

Conditions studied

  • Facial Asymmetry
  • Mandible; Hypoplasia, Unilateral Condylar
  • Distraction of Bone

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03

In context

Facial Asymmetry

27 studies on the registry are indexed under Facial Asymmetry; 10 are open to participants now.

This study's planned enrollment of 30 is below the median of 34 across 17 interventional studies indexed under Facial Asymmetry.

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Lead sponsor

Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University is the lead sponsor of 164 studies on the registry; 73 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
6 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients who were scheduled to undergo mandibular DO via intraoral approach
  • Patients who were scheduled to undergo CT scan as a part of their diagnosis and treatment
  • Patients who agreed to participate in this study

Exclusion criteria

Exclusion Criteria:

  • Patients requiring more than one distractor of the mandible
  • Patients with mandible defect
  • Patients with previous mandibular trauma
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
30 participants (estimated)

Interventions

  • DeviceCAD/CAM Surgical Template

    The templates were designed based on virtual planning and manufactured using three-dimensional printing technique. The template is designed to assist the surgeon to perform the osteotomy and predrill the screw holes to guide the distractor position.

06

What researchers measure

Primary outcomes

  1. Linear differences of the distractor position

    Time frame: within latency period (5-7 days after the surgery)

  2. angular differences of the distractor vector

    Time frame: within latency period (5-7 days after the surgery)

07

Study locations

1 of 1 sites recruiting
  • Ninth People's Hospital, Shanghai Jiaotong University School of Medicine
    Shanghai, China
    Recruiting
    • Biao Li, Master · Contact
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Jan 2014 to primary completion in Apr 2016, 27 months.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 31, 2017
First posted
Sep 1, 2017
StartActual
Jan 1, 2014
Primary completionActual
Apr 30, 2016
CompletionEst.
Dec 31, 2018
Last update
Sep 1, 2017
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 1, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03270618
Responsible party
Xudong Wang (Director of the Department of Oral and Craniomaxillofacial Surgery, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University) — Principal investigator
First posted
Sep 1, 2017
Start date
Jan 1, 2014
Primary completion
Apr 30, 2016
Completion
Dec 31, 2018 (estimated)
Last update
Sep 1, 2017

Study contacts

Biao Li, Master
Contact
benleex@foxmail.com
15900561183
Xudong Wang
study chair · Ninth People's Hospital, Shanghai Jiaotong University School of Medicine

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Aug 2017. You cannot join it, but the record below documents what was studied.

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