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OpenTrials
Completed

NCT Number: NCT07060027

Single vs. Double Tenting Screws for Horizontal Ridge Augmentation.

The goal of this clinical trial is to learn if using two screws works better than one screw for building up jawbone width before dental implant placement. It will also check the safety of both techniques. The main questions it aims to answer are:

* Does using two screws give better bone growth than using one screw? * Which technique creates more stable bone for dental implants?

Researchers will compare the single-screw technique to the double-screw technique to see which works better for jawbone reconstruction.

Participants will:

* Receive either one or two small titanium screws placed in their jawbone to support a bone graft * Have the graft covered with a protective membrane * Return after 6 months for screw removal and dental implant placement * Attend follow-up visits to check healing progress

The study will help dentists determine the best method for patients who need jawbone reconstruction before getting dental implants. All procedures use FDA-approved materials and follow standard surgical protocols.

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Key information

Conditions

Bone Defects

Age range

20 year–55 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

hospital of faculty of dentistry, Minia university

Minya, 61512, Egypt

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Patients are systemically healthy based on questionnaire dental modification of Cornell index (Bolender, C. L. et al., 1969).
  • Gingival health according to the new classification system (Caton, J. G. et al., 2018).
  • The recipient site of the augmentation is free from any pathological conditions.
  • At least 1 tooth area with a ridge defect and planned to receive a dental implant. The site must be bordered by at least 1 tooth.
  • Class I ridge defect according to Seibert's classification.
  • Adequate interocclusal space to accommodate the available restorative components.

Exclusion criteria

  • Parafunctional habits such as bruxism and clenching
  • Smokers
  • Pregnant females

Treatment and study plan

horizontal bone augmentation using single tenting screw

Procedure

Patients in this group will undergo guided bone regeneration (GBR) using a single titanium bone screw placed in the crestal position to stabilize the graft material. The surgical procedure includes sulcular and vertical releasing incisions, elevation of full-thickness buccal and palatal/lingual flaps, and multiple cortical perforations to enhance angiogenesis. The defect will be filled with particulate allograft extended 10-12 mm apicocoronally and covered with a bovine pericardium membrane. A tension-free primary closure will be achieved using 5-0 polypropylene sutures. Bone screw removal and implant placement will occur 6 months postoperatively. This group is distinguished by the use of a single crestal screw for graft stabilization compared to dual-screw fixation in the control group.

horizontal bone augmentation using Double tenting screw

Procedure

Participants in this group will receive guided bone regeneration (GBR) with two titanium bone screws for enhanced graft stabilization. One screw will be placed at the crestal level, while a second screw will be inserted 5 mm apical to the first, providing vertical stabilization of the graft material. The procedure involves sulcular and vertical releasing incisions, full-thickness flap elevation on both buccal and palatal/lingual aspects, and multiple cortical perforations to stimulate vascularization. The defect will be filled with particulate allograft extending 10-12 mm apicocoronally and covered with a bovine pericardium membrane. Tension-free primary closure will be performed using 5-0 polypropylene sutures. At 6 months, screws will be removed and dental implants placed. This intervention is distinguished by the dual-screw fixation technique, designed to provide greater mechanical stability compared to the single-screw approach used in the comparator group.

Primary outcomes

  1. Change in Horizontal Ridge Width at Mid-Crestal Level

    Time frame: 6 months post-intervention

    Ridge width will be measured at the mid-crestal level using a bone caliper to the nearest millimeter. A standardized stent will ensure consistent measurement positioning.

  2. Change in Horizontal Ridge Width 5 mm Apical to Crest

    Time frame: 6 months post-intervention

    Ridge width will be measured 5 mm apical to the crestal level using a bone caliper to the nearest millimeter. The same stent will standardize measurements.

Secondary outcomes

  1. Change in Keratinized Mucosa Width at 6 Months Post-Reentry

    Time frame: 6 months post-intervention

    The width of keratinized mucosa will be measured using a periodontal probe to the nearest millimeter at the reentry procedure, 6 months after the initial intervention. The same stent will be used to standardize measurements.

  2. Change in Alveolar Ridge Width via CBCT at 6 Months

    Time frame: 6 months post-intervention

    Cone-beam computed tomography (CBCT) will be used to assess changes in ridge width at 6 months post-intervention

  3. Change in Bone Density via CBCT at 6 Months

    Time frame: 6 months post-intervention

    CBCT imaging will assess bone density changes (in Hounsfield units or grayscale values) at the treated site after 6 months.

Sponsors and collaborators

Lead sponsor

Omar Saad

Other

Registry information

Official study title

The Effect Of Single Versus Double Screws In Tenting Screw Technique For Horizontal Ridge Augmentation Before Dental Implant Placement (Randomized Clinical Trial)

Important dates

Study start
2022
Primary completion
2024
Study completion
2024
First posted
Jul 11, 2025
Registry last updated
Jul 11, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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