This Study Will be Directed Toward Evaluating Peri-implant Tissue Behavior, Pink Esthetic Score, Patient Satisfaction and Marginal Accuracy Associated With Biologically Oriented Preparation Technique for Implant Supported Crowns.

NCT07760064 | Completed

• 1 other identifier: P-CR-22-06
• Study Type: interventional
• Target: 20
• Locations: 1 country
• Sites: 1

Brief Summary

patients will be divided into two groups (n=10) according to the type of abutment used: Group (1): will receive conventional shoulder abutment. Group (2): will receive customized titanium biologically oriented prepared abutments or shoulderless abutments that are prepared in the same manner as the natural abutment teeth in the BOPT protocol Construction of the crowns: Patients in both groups will receive porcelain fused to metal crowns. Assessment of: Soft tissue thickness Hard tissue thickness Marginal discrepancy Pink esthetic score Patient satifaction

Conditions

Implant Complication

Outcome Measures

Primary Outcomes (3)

• soft and hard tissue thickness

  by cone beam ct

  3,6 and 9 moths

• marginal discrepancy

  by dual scan replica technique

  at delivery time

• pink esthetic score and patient satisfaction pink esthetic score and patient satisfaction

  by questionnaire

  at delivery time

Study Arms (2)

conventional shoulder abutment

ACTIVE COMPARATOR

customized zirconia shoulder implant abutment with screw retained zirconia crown will be fabricated

Procedure: customized biologically oriented prepared implant abutment

customized biologically oriented prepared implant abutments

ACTIVE COMPARATOR

customized zirconia shoulderless implant abutment with screw retained zirconia crown will be fabricated

Procedure: customized biologically oriented prepared implant abutment

Interventions

customized biologically oriented prepared implant abutment PROCEDURE

custom made zirconia implant abutment

conventional shoulder abutment; customized biologically oriented prepared implant abutments

Eligibility Criteria

• Age: 20 Years - 45 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64)

You may qualify if:

• Age range of patients 20-45 years old, with no gender prediction, able to read and sign the informed consent.
• \. Patient with missing tooth in the esthetic region indicated for replacement with implant.
• \. Adjacent and opposing natural teeth should be present. 4. The edentulous ridge should be free from any infection or remining root. 5. Patient should be able to tolerate surgical procedure of implant procedures physically and psychologically.
• \. Patient should be willing to return for follow-up examination and evaluation.

You may not qualify if:

• \- Patients with active periodontal diseases. 2. Patient with poor oral hygiene and motivation. 3. Pregnant women. 4. Patient with unrealistic expectations. 5. Patients with parafunctional habits and smoker. 6. Patient with systemic disease and immunocompromised patients which will prevent surgical procedure.
• \. Recent extraction or extraction socket with infection or remaining root.

Sponsors & Collaborators

• Kholoud Mohamed Mahmoud Soliman: lead

Study Sites (1)

AlAzhar University

Cairo, Nasr City, 002, Egypt

Location

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Specialist prosthodontist

Study Record Dates

• First Submitted: August 7, 2026
• First Posted: August 12, 2026
• Study Start: March 4, 2023
• Primary Completion: September 30, 2025
• Study Completion: February 20, 2026
• Last Updated: August 12, 2026

Record last verified: 2026-08

Locations

EG (1)