Differences Between Two Type Implants in Post-extraction Alveolus

Summary

One of the challenges of current implantology involves the preservation or reduction of existing bone resorption, mainly in the buccal bone plate, after tooth loss, which becomes of special importance in the anterior region of the maxilla (aesthetic region). The study evaluates the macroscopic shape of neck implant influence in the results of immediate implants, in a population comprised of individuals from the clinic of the Faculty of Dental Medicine of the University of Porto in need of replacement of a single tooth. It is intended to evaluate the morphometric (direct measures and plaster models measurements), imaging, and photographic characteristics of the V3 implant in comparison with the C1 implant of Mis® by an evaluation period of 6 months when placing an immediate implant.

Conditions

• Dental Implants, Single-Tooth

Interventions

OTHER

A - Bone defect (clinical variables)

At T0, the edentulous space to be rehabilitated will be characterized in terms of the morphometric level of the existing defect in the vestibular cortical, according to the classification by Caplanis N. in EDS-1 or EDS-2.

OTHER

B- Bacterial plaque index (O'Leary index)(clinical variables)

At time T-1 and T4, the investigator will analyse the existing plaque on teeth adjacent to the surgical site using a dichotomous score (0 = no visible plaque at the soft tissue margin, 1 = visible plaque at the soft tissue margin). The result will be present in percentage (0% (better)-100%(worse)) and will describe the change between T-1 and T4, and compare the results between implants type.

OTHER

C- Probing depth

At Time T-1 and T4, the investigators will analyse the probing depth of the teeth adjacent to the site to be treated at 6 points: mesiobuccal, vestibular, distobuccal, mesiopalatal, palatine, distopalatal. The recordings will be carried out with a CP 15 UNC, Hu-Friedy® Chicago, IL, EUA manual probe.The result will be present in millimeters. The change between T-1 and T4 is also going to be analysed and compare implants results.

OTHER

D- Bleeding on probing

At time T-1 and T4, the investigators will analyse the bleeding on probing of the teeth adjacent to the site to be treated at 6 points: mesiobuccal, vestibular, distobuccal, mesiopalatal, palatine, distopalatal. The recordings of bleeding on probing will be carried out with a CP 15 UNC, Hu-Friedy® Chicago, IL, EUA manual probe.The result will be present in percentage (0% (better)-100%(worse)) and will describe the change between T-1 and T4 and compare between implants type.

OTHER

E- Gingival phenotype

At time T-1, the identification of the gingival phenotype is performed by clinical inspection with a periodontal probe. The gingival phenotype will be classified as thin, moderate or thick. The investigators will compare implant results.

OTHER

F- Implant insertion torque (Clinical variables)

Recording of implant insertion torque, in Ncm during placement in T1, and compare implants results.

OTHER

G- Implant stabilization quotient (ISQ) (clinical variables)

Determination of the implant stability coefficient at the time of implant placement (T1) and in the 2nd surgical phase (T3) using the Osstell® device (minimum 1; maximum 100; high stability when ≥70) and analysis of the change between T1 and T3 and different implants results.

OTHER

Morphometric results (Direct measurements - millimeter)

Compare Direct measurements (millimeters) at the different times intervention with periodontal probe or gauge and analyse the change between times and compare implant results. In T-1, T2 and T3c and T4 the investigators will evaluate interdental distance; BPD, cortical bone, papilla and volume, corresponding of measurements: a,b,c and r. In T0, the investigators will evaluate interdental distance; BPD, cortical, bone and global volume corresponding to measurements: a, b, c, d, e, q, r, s, t, and u). In T1 e T3, the investigators will evaluate interdental distance; BPD, cortical, bone and global volume, implant parameter corresponding to measurements: a, b, d, e, f, g, h, I, j, k, l, m, n, p, q, r and ISQ value.

OTHER

Morphometric results (plaster models measurements - millimeter)

Preparation of plaster models at times T-1 and T4 and the following measurements (millimeter) will be evaluated with the use of periodontal probe or gauge and will analyse the change between T-1 and T4 and compare implants results: 1. interdental distance 2. bucco-palatal distance (BPD) 3. presence of papilla r. global volume.

OTHER

Imaging Results (X-ray) (millimeter)

The investigator will measure (millimeters, using the imaging software virtual ruler) the results of digital X-ray at times T-1, T1,T4 and analyse the variation and compare implants results. The measurements are: a. interdental distance; i. implant - cemento-enamel junction (CEJ) of adject teeth distance; l. distance from the implant position depth to the buccal bone crest; n. implant diameter; o. implant length.

OTHER

Imaging Results (CBCT)(millimeter)

The investigator will measure (millimeters, using the imaging software virtual ruler) the results of CBCT at times T-1 and T4, analyse the variation and compare implants results. The measurements are: 1. interdental distance; 2. bucco-palatal distance (BPD); d. buccal cortical distance; e. palatal cortical distance; f. mesial cortical distance; g. distal cortical distance; h. jumping distance; j. buccal cortical wall-implant distance; k. jumping distance space depth; l. distance from the implant position depth to the buccal bone crest; m. distance from the buccal cortex to the center of the implant; n. implant diameter; o. Implant length; q. global bone volume; r. global volume; s. alveolus buccal-palatal distance; t. alveolus mesial-distal distance; u. alveolus depth.

OTHER

Photographic results PES/WES index

The investigator will analyse the intraoral photographs to describe the Pes/Wes index, in time T-1 (initial) and T4 (final), and compare the PES/WES results between implants.The score will range on 0-10, the best score is ≥8.

Sponsors & Collaborators

• Universidade do Porto

  lead OTHER

Principal Investigators

• Ricardo Faria Almeida, PhD · Faculdade de Medicina Dentaria da Universidade do Porto

Study Design

Allocation

RANDOMIZED

Purpose

OTHER

Masking

QUADRUPLE

Model

PARALLEL

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2017-06-01

Primary Completion

2021-01-30

Completion

2021-12-30

Countries

• Portugal

Study Locations