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Computer Guided Immediate Implant Placement in Mandibular Molars Using Patient Specific 3D Printed Polylactic Acid Graft Versus Conventional Immediate Implant Placement With Xenograft

NCT07774052 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 17

Last updated 2026-08-19

No results posted yet for this study

Summary

This randomized controlled clinical trial will evaluate a computer-guided immediate implant placement technique in non-restorable mandibular molars using a patient-specific 3D-printed polylactic acid (PLA) graft and implant position guide, compared with conventional immediate implant placement using xenograft for grafting of the jumping gap.

Eligible patients requiring extraction and immediate implant placement in mandibular molars will be randomly allocated to either the PLA-guided intervention group or the conventional treatment group. In the intervention group, a patient-specific 3D-printed PLA graft and guide will be designed from preoperative CBCT data and used to guide implant placement in the digitally planned position. In the control group, immediate implant placement will be performed using the conventional protocol with xenograft grafting.

The study will assess the primary stability of the dental implant and the accuracy of implant placement compared with the digitally planned position. Implant stability will be measured using the Osstell device, while implant position will be evaluated by superimposing the immediate postoperative CBCT scan on the preoperative CBCT using Blue-Sky Plan software.

Patients will be followed clinically after surgery, with follow-up visits during the healing period and a six-month postoperative CBCT evaluation before implant loading.

Conditions

  • Immediate Implant Placement in Mandibular Molar Extraction Sockets

Interventions

DEVICE

Patient-Specific 3D-Printed PLA Socket Guide and Root-Form Scaffold

A patient-specific 3D-printed polylactic acid (PLA) socket-supported surgical guide was used to guide implant osteotomy preparation, combined with a customized root-form PLA scaffold designed to occupy the residual peri-implant socket gap and provide structural support during immediate implant placement in mandibular molars.

DEVICE

Conventional Immediate Implant Placement

Freehand immediate implant placement with particulate xenograft to fill the residual peri-implant socket gap.

Sponsors & Collaborators

  • Mahmoud Fawzy Mahmoud Mohamed

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
45 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-11-04
Primary Completion
2026-05-31
Completion
2026-05-31

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07774052 on ClinicalTrials.gov