3D Analysis of Peri-implant Soft Tissue with Two Different Connection Types

Charite University, Berlin, Germany38 enrolled

Overview

Objectives: assessment of dimensional soft tissues change after single tooth gap implantation with a closed healing approach and using conical and butt-joint implant-abutment connection type. Material and Methods: forty patients were enrolled in the study and received randomly allocated implants with conical and butt-joint implant-abutment connection type. A standard healing abutment was placed after 6 months for two weeks. The definitive screw retained crowns were manufactured in a digital workflow. The soft tissue profile was digitized using IOS on following stages: pre-op, immediately, two, 7 and 14 days post-op, pre-exposure, immediately after exposure, two weeks after exposure (pre-delivery), immediately after crown delivery, 6 and 12 months after delivery. The intraoral scans were matched in the metrology software (Geomagic Control X). The mean maximum and mean average differences in mm were gathered to assess the soft tissues change. Various anamnesis parameters have been taken into account.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Tooth Loss

Interventions

Thirty eight patients were enrolled in the study and received randomly allocated implants with conical and butt-joint implant-abutment connection type. A standard healing abutment was placed after 6 months for two weeks. The definitive screw retained crowns were manufactured in a digital workflow. The soft tissue profile was digitized using IOS on following stages: pre-op, post-op: immediately, two, 7 and 14 days, pre-exposure, immediately after exposure, two weeks after exposure (pre-delivery), immediately after crown delivery, 6 and 12 months post-op.

Eligibility

Sex: ALLMin age: 25 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Presence of a single tooth gap, completion of conservative and periodontal treatments, diagnostic preoperative models, and a recent panoramic radiograph not older than 6 months. Exclusion Criteria: * Abnormal jaw anatomy, insufficient bone volume, bone conditions (e.g., cysts, tumors), oral mucosa abnormalities (e.g., lesions, diseases), untreated periodontal disease, acute inflammation, pregnancy, temporary medication contraindications, psychological issues (e.g., substance abuse), poor compliance, and general medical contraindications.

Outcomes

Primary Outcomes

Linear changes of soft tissue in mm

The primary outcome measure is the change in peri-implant soft tissue profile, quantified in millimeters, assessed at various stages post-op. This includes measurements taken at pre-operative, immediately post-operative, 2 days, 7 days, 14 days, pre-exposure, post-exposure, pre-delivery, immediately after crown delivery, and at 6 and 12 months after delivery.

Time frame: Assessment at pre-op, immediately post-op, 2 days, 7 days, 14 days, pre-exposure, post-exposure, pre-delivery, immediately after crown delivery, 6 months, and 12 months.

Secondary Outcomes

Influence of anamnestic parameters

For all enrolled patients a detailed medical history was collected, including following parameters: sex, region, brushing, mouth rinsing, flossing, alcohol consumption, stress, periodontitis therapy, gingival biotype.

Time frame: 12 months