The occurrence of peri-implant mucositis associated with the shift of submucosal microbiome in patients with a history of periodontitis during the first two years.

Aim: To investigate the dynamic changes of peri-implant microbiome in patients with a history of periodontitis and to construct a microbial prediction model.

Materials And Methods: The prospective study was performed at one month (T1), one year (T2) and two years (T3) after restoration. Clinical examinations [probing depth (PD), bleeding on probing (BOP), suppuration (SUP)], radiographic examinations and sample collection were conducted at three timepoints.

A three-year study on periodontal microorganisms of short locking-taper implants and adjacent teeth in patients with history of periodontitis.

Objective: To analyze the change of six periodontal pathogens around short locking-taper implants and adjacent teeth in patients with different periodontal conditions for three years.

Methods: Sixty implants and 62 adjacent teeth from 24 patients with different periodontal conditions were included: 5 patients with history of aggressive periodontitis (AgP group), 14 patients with history of chronic periodontitis (CP group), and 5 patients with healthy condition or slight gingivitis (H group). Subgingival samples were collected at five timepoints: before implant placement (T1); before second stage operation (T2); one month after restoration (T3); one year after functional loading (T4) and two years after functional loading (T5).

Ligature-induced peri-implant infection in crestal and subcrestal implants: a clinical and radiographic study in dogs.

Objective. The aim of this study was to assess the influence of implant-abutment interface (IAI) placement depths on peri-implant tissues in the presence of ligature-induced peri-implant inflammation. Materials and Methods.

[Comparison of treatment effect between periodontal subgingival scaling with the special series of ultrasonic inserts and Gracey curette].

Objective: To compare the special series of ultrasonic inserts with Gracey curettes in the effectiveness and efficiency for non-surgical periodontal treatment.

Methods: A total of 30 patients with moderate to advanced chronic periodontal disease were treated with both ultrasonic inserts (ultrasonic group) and Gracey curettes (Gracey group) according to a prospective, randomized, controlled, one-blind, "split-mouth" design. Twenty-six cases were available for the whole follow-up period.

Influence of placement depth on bone remodeling around tapered internal connection implant: a clinical and radiographic study in dogs.

Background: The aim of this study is to evaluate the influence of placement depth on bone remodeling around implants with two different types of tapered internal implant-abutment interface (IAI): tapped-in (TI) tapered internal IAI and screwed-in (SI) tapered internal IAI in dogs.

Methods: The second, third, and fourth premolars and the first molar in mandibles of six beagle dogs were extracted. After 8 weeks, two SI implants and two TI implants were placed in one side of the mandible.