Accuracy of Selective Laser Sinteredcomputer Guided Stents Versus Digital Light Processing Stents (RCT)

July 24, 2020 updated by: mahetab hamdi, Cairo University

Accuracy of Selective Laser Sintered Computer Guided Stents Versus Digital Light Processing Stents in Immediate Implant Placement in Esthetic Zone, a Randomized Controlled Study

patient with non-restorable tooth in the esthetic zone will be recruited in the study. a traumatic is done and implant will be placed using either digital light processed guides for control group or selective laser sintering group for intervention group.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

the principle investigator will randomize and equally distribute the Eligible patients between the selective laser sintering group (intervention group) and digital light processing group (control group).

  • Diagnostic phase : for initial diagnosis, principle investigator will make primary impression , bite registration, face bow record and periapical x-ray for each eligible patients. The tooth to be extracted will be removed from the cast and replaced with an artificial tooth. For construction of radio graphic stent, a clear thermoplastic sheet will be pressed on the modified cast using a vacuum forming machine . A hole is done in the center of the artificial tooth packed with heated gutta percha (radiopaque material) for easy visualization on the cone beam during virtual implant placing. A dual scan protocol with cone beam CT will be made. The first scan is for the patient wearing the scan appliance while the second will be for the cast with the scan appliance.
  • Planning phase : placing of the virtual implant and designing of the surgical stent will be done by virtual planning software .
  • Construction of the surgical guide: principle investigator will send the Standard Language transformation (STL) file of the designed guide to a rapid prototyping center. Selective laser sintering and digital light procesing will be used for intervention and control group respectively. principle investigator will check for adaption of the guide on the cast and cement the metallic sleeve to prevent rotation during surgery.
  • Surgical phase : principle investigator will prescribe a prophylactic antibiotic to the patient three days prior the surgery. Atraumatic extraction will be carried by periotomes and lancet. The integrity of the socket will be examined well by probe. The guide is stabilized in its place then drilling and implant placement will be done. Healing abutment is screwed in place to allow proper healing of the soft tissue. Patient will be instructed to avoid hard foods and follow restrict oral hygiene measures. Patient will be recalled after one week for postoperative inspection and assessment. A cone beam CT will be taken for deviation assessment.

Study Type

Interventional

Enrollment (Actual)

22

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Egypt
    • Manil
      • Cairo, Manil, Egypt, 02
        • Faculty of Dentistry Cairo University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 50 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Patient age should be more than 18 years old
  2. Hopeless tooth in esthetic zone due to caries, endodontical problem or trauma with both neighboring teeth present.
  3. Good oral hygiene
  4. No periapical lesions (acute accesses or chronic fistula)
  5. Adequate bone (5 mm) below the tooth to allow primary implant stability
  6. Sufficient Medio-distal bone about 1.5 from each side
  7. sufficient labial bone
  8. sufficient band of keratinized mucosa

Exclusion Criteria:

  1. heavy smoking
  2. any systemic condition that is considered absolute contraindication for implant placement
  3. pregnancy
  4. in adequate inter-arch space
  5. parafunctional habits as bruxism

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: digital light processing stent
according to the allocation, the experimental group will receive a digital light processing stent for immediate implant drilling and placement after atraumatic extraction of the target tooth.
Device: selective laser sintered stent
after planning and virtual implant placement, a guide will be designed and the STL file will be send to prototyping center for printing the guide with selective laser sintering technique. during the surgical procedure , the target tooth will be atraumatic extracted, the stent is adapted in its place then implant drilling and placement will be done.
Other Names:
  • Mega selective laser sintering (brand name )
Device: digital light processing(dlp)
after planning and virtual implant placement, a guide will be designed and the STL file will be send to prototyping center for printing the guide with digital light processing technique. during the surgical procedure , the target tooth will be atraumatic extracted, the stent is adapted in its place then implant drilling and placement will be done.
Other Names:
  • mogassam (brand name)
Active Comparator: selective laser sintering
according to the allocation, the intervention for the control group will be a selective laser sintering stent after atraumatic extraction of the target tooth for immediately implant placement. the selective laser sintering stent will be adapted and drilling will be done through the stent.
Device: selective laser sintered stent
after planning and virtual implant placement, a guide will be designed and the STL file will be send to prototyping center for printing the guide with selective laser sintering technique. during the surgical procedure , the target tooth will be atraumatic extracted, the stent is adapted in its place then implant drilling and placement will be done.
Other Names:
  • Mega selective laser sintering (brand name )
Device: digital light processing(dlp)
after planning and virtual implant placement, a guide will be designed and the STL file will be send to prototyping center for printing the guide with digital light processing technique. during the surgical procedure , the target tooth will be atraumatic extracted, the stent is adapted in its place then implant drilling and placement will be done.
Other Names:
  • mogassam (brand name)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
evaluation of accuracy of implant placement clinical observation
Time Frame: 1 week
measuring both angular and linear deviation of implants by virtual ruler in terms of mm
1 week

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Cairo University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

  • Abduo, J., Lyons, K. & Bennamoun, M., 2014. Trends in Computer-Aided Manufacturing in Prosthodontics: A Review of the Available Streams. International Journal of Dentistry, 2014, pp.1-15. Available at: http://www.hindawi.com/journals/ijd/2014/783948/. Alzoubi, Fawaz, Nima Massoomi, and A.N., 2016. Accuracy Assessment of Immediate and Delayed Implant Placements Using CAD/CAM Surgical Guides. Journal of Oral Implantology ., 42(5), pp.391-398. Arısan, V. et al., 2013. Implant Positioning Errors in Freehand and Computer-Aided Placement Methods: A Single-Blind Clinical Comparative Study. The International Journal of Oral & Maxillofacial Implants, 28(1), pp.190-204. Available at: http://www.quintpub.com/journals/find_article.php?doi=10.11607/jomi.2691.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

December 1, 2017

Primary Completion (Actual)

January 1, 2020

Study Completion (Actual)

February 11, 2020

Study Registration Dates

First Submitted

September 14, 2017

First Submitted That Met QC Criteria

September 15, 2017

First Posted (Actual)

September 19, 2017

Study Record Updates

Last Update Posted (Actual)

July 28, 2020

Last Update Submitted That Met QC Criteria

July 24, 2020

Last Verified

July 1, 2020

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • R.prosthodontic department

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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