Marginal Bone Level Around Titanium Implants Produced by Additive Manufacture

Not Applicable

Active, not recruiting

• Conditions: Dental Implants

• Registration Number: NCT05627037
• Lead Sponsor: University of Sao Paulo

Brief Summary

The aim of this study will be to evaluate the non-inferiority of implants produced by additive manufacture loaded in 30 days when compared with those loaded in 90 days, in relation to marginal bone loss, after 01 (one) year of follow-up

Detailed Description

This randomized Split-mouth clinical study of non-inferiority will monitor for one year partially edentulous patients in the posterior region of the mandible or maxilla, rehabilitated with 2 implants (AM) in the same Arch to evaluate the success rate of the implant, one loaded at 30 days after installation and the other at 90 days. Changes in marginal bone level and osseointegration success will be evaluated, with visits and data collection in 0 days (baseline), 30 days, 90 days, 6 months and 1 year

Study Timeline

• Study First Submitted: 2022-10-31
• Study Start: 2022-11-02
• Study First Submitted QC: 2022-11-23
• Study First Posted: 2022-11-25
• Primary Completion: 2023-11-02
• Status Verified: 2025-06
• Last Update Submitted: 2025-06-16
• Last Update Posted: 2025-06-19
• Study Completion: 2025-11-02

Recruitment & Eligibility

• Status: ACTIVE_NOT_RECRUITING
• Sex: All
• Target Recruitment: 75

Inclusion Criteria

• Patients treated and referred by the Dental Clinic of the School of Dentistry of the University of São Paulo;

• Individuals over 18 years and under 70 years of age;

• Good general health;

• signed Informed Consent Form;

• Need for rehabilitation with dental implants in areas of mandible or posterior maxilla (premolars and/or molars);

• bacterial plaque index ≤ 20% (Silness & Loe, 1964);

• bleeding rate of ≤ 20% (Loe & Silness, 1963);

• Sufficient alveolar bone volume for an implant of:

  • Length: 8 or 10mm
  • Diameter: 3.5mm, 4. 00mm or 4. 5mm

• Bone quality type I-III;

• No associated bone regeneration.

Exclusion Criteria

• Pregnant and lactating women;
• Uncontrolled diabetes;
• History of chemotherapy or radiotherapy in the last 5 years;
• Radiotherapy in areas of the head and neck;
• Use of immunosuppressants, bisphosphonate or prolonged use of corticosteroids;
• Smokers;
• Alcohol or drug abuse;
• Untreated periodontitis;
• History of previous bone increase in the implant installation region;
• Presence of residual roots at the site receiving the implant;
• Bone density type IV
• Individuals with connective tissue disorders or metabolic diseases;
• Postmenopausal osteoporosis or other systemic diseases that may affect bone metabolism;
• Need for guided bone regeneration at the time of implant installation.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Marginal Bone Loss (MBL)	1 year	Digital periapical radiographs will be taken at the implant installation (baseline) after 1 year. The radiographs will be taken using the parallelism technique with a positioner that supports the digital sensor in order to standardize the radiographs.

Secondary Outcome Measures

Name	Time	Method
Implant success rate	1 year	The success rate or failure of each implant in clinical and radiographic findings will be classified using the success criteria defined by Buser et al. (1990); 1. Absence of persistent subjective complaints, such as pain, foreign body sensation and/or dysesthesia.; 2. Absence of a recurrent peri-implant infection with suppuration.; 3. Absence of mobility.; 4. Absence of a continuous radiolucency around the implant.; 5. Possibility for restoration. These criteria will be monitored at 0 days (baseline), 30 days, 90 days, 6 months, and the final endpoint is one year
Modified Bleeding Index (mBI)	1 year	Modified Sulcus Bleeding Index (Mombelli, Van Oosten Et.Al 1987): Scoring Criteria: Score 0: No bleeding when probe is passed along the gingival margin. Score 1: Isolated bleeding, spots present. Score 2: Blood forms a confluent red line on margins. Score 3: Heavy or profuse bleeding. The changes in Modified Bleeding Index (mBI) will be monitored by a blinded calibrated examiner at 0 days (baseline), 30 days, 90 days, 6 months, and the final endpoint is one year
Modified Plaque Index (mPI)	1 year	Modified Plaque Index (Mombelli, Van Oosten Et.Al 1987): Scoring Criteria: Score 0: No detection of plaque Score 1:Plaque only recognized by running a probe across the smooth marginal surface of the implant Score 2: Plaque can be seen by the naked eye. Score 3: Abundance of soft matter. The changes in Modified Plaque Index (mPI) will be monitored at 0 days (baseline), 30 days, 90 days, 6 months, and the final endpoint is one year
Pocket probing depth (PPD)	1 year	Pocket Probing Depth (PPD) will be measured by a blinded calibrated Examiner, and The changes in Pocket Probing Depth (PPD) will be monitored at 0 days (baseline), 30 days, 90 days, 6 months, and the final endpoint is one year
clinical attachment level (CAL)	1 year	Clinical attachment level (CAL) will be measured by a blinded calibrated Examiner, and The changes in clinical attachment level (CAL) will be monitored at 0 days (baseline), 30 days, 90 days, 6 months, and the final endpoint is one year

Trial Locations

Locations (1)

School of Dentistry - University of São Paulo; 🇧🇷 São Paulo, Brazil