Diagnosis and non-surgical treatment of peri-implant diseases and maintenance care of patients with dental implants - Consensus report of working group 3.

The following consensus report is based on four background reviews. The frequency of maintenance visits is based on patient risk indicators, homecare compliance and prosthetic design. Generally, a 6-month visit interval or shorter is preferred.

Diagnosis of Periimplant Disease.

Purpose: The aim of this review is to describe the current guidelines for the differential diagnosis of periimplant diseases.

Materials And Methods: Synopsis reviews were conducted to define the differential diagnosis of periimplant disease through an electronic literature search in MEDLINE up to February 2018.

Discussion: Periimplant mucositis is defined by the presence of bleeding and/or suppuration on gentle probing with or without an increased probing depth compared with previous examinations and by the absence of bone loss beyond crestal bone-level changes resulting from initial bone remodeling.

Spectral domain optical coherence tomography of multi-MHz A-scan rates at 1310 nm range and real-time 4D-display up to 41 volumes/second.

An ultrafast frequency domain optical coherence tomography system was developed at A-scan rates between 2.5 and 10 MHz, a B-scan rate of 4 or 8 kHz, and volume-rates between 12 and 41 volumes/second. In the case of the worst duty ratio of 10%, the averaged A-scan rate was 1 MHz.

Full-range imaging of eye accommodation by high-speed long-depth range optical frequency domain imaging.

We describe a high-speed long-depth range optical frequency domain imaging (OFDI) system employing a long-coherence length tunable source and demonstrate dynamic full-range imaging of the anterior segment of the eye including from the cornea surface to the posterior capsule of the crystalline lens with a depth range of 12 mm without removing complex conjugate image ambiguity. The tunable source spanned from 1260 to 1360 nm with an average output power of 15.8 mW.

Fourier domain optical coherence tomography using optical demultiplexers imaging at 60,000,000 lines/s.

We describe high-speed Fourier domain optical coherence tomography (OCT) using optical demultiplexers (ODs) for spectral dispersion. The OD enables separation of a narrow spectral band of 14 GHz (0.11 nm) from a broadband incident light at 256 different frequencies in 25.

[What prosthodontic therapy should we select for periodontally compromised patients? Part 2: Review of the literature focusing on conventional prosthodontic therapy for periodontally compromised patients and clinical implication (RPD vs FPD vs implant)].

Purpose: To review the clinical literature on fixed partial denture (FPD) and removable partial denture (RPD)treatment for periodontally compromised patients with partial dentate. In addition, prosthodontic management in periodontitis-susceptible subjects was evaluated from the results of Part 1 and Part 2.

Study Selection: Clinical studies that documented survival rates of FPD in periodontally compromised patients were selected and reviewed.

[What prosthodontic therapy should we select for periodontally compromised patients? Part 1: Review of the literature focusing on implant therapy for periodontally compromised patients].

Purpose: From a large number of experimental and clinical studies, it has been suggested that dental implant therapy has good prognosis for totally and partially edentulous patients. However, it is unclear whether we can use the implants for periodontally compromised patients. The aim of the present study was is to consider scientific evidence on implant treatment for periodontitis-susceptible subjects with partially edentulous dentate.

Optical frequency-domain reflectometry with a rapid wavelength-scanning superstructure-grating distributed Bragg reflector laser.

Superstructure-grating distributed Bragg reflector lasers are particularly suited for optical frequency-domain reflectometry optical-coherence tomography with wide wavelength tunability and frequency agility. We report theoretical estimates of and experimental results for the data acquisition speed, the observable depth range, the resolution, and the dynamic range of an optical frequency-domain reflectometry system that uses a superstructure-grating distributed Bragg reflector laser whose wavelength can be tuned from 1533 to 1574 nm with a tuning speed of 10 micros/0.1-nm step.