Cutaneous Malassezia microbiota in atopic dermatitis patients differ by gender and body part.

Background: Malassezia is a particularly important factor in the occurrence of atopic dermatitis (AD).

Aim: The aim of this study was to quantitatively clarify the Malassezia species isolated from AD patients by gender, body part and analytical method in detail.

Methods: The subjects were 20 AD males and 47 AD females.

Cutaneous Malassezia microbiota of healthy subjects differ by sex, body part and season.

Malassezia is a component of normal cutaneous resident microbiota. The aim of this study was to quantitatively clarify the differences in cutaneous Malassezia microbiota in healthy subjects by sex, body part and season. Samples were collected from the forehead, cheek, upper chest and upper back of 20 healthy men and 20 healthy women (average age 32 years) in summer and winter by the swab method.

Effects of Propionibacterium acnes on various mRNA expression levels in normal human epidermal keratinocytes in vitro.

Propionibacterium acnes is one of the most significant pathogenic factors of acne vulgaris. This bacteria relates to acne by various pathways. It has also been reported that P.

Malassezia folliculitis is caused by cutaneous resident Malassezia species.

Malassezia folliculitis [MF] is caused by the invasion of hair follicles by large numbers of Malassezia cells, but it remains unclear which Malassezia species are involved in the disease. To clarify this situation, Malassezia species isolated from lesions of MF patients were analyzed by both culture and non-culture methods. In addition, Malassezia species recovered from the non-lesion areas of the skin of MF patients and skin samples of healthy subjects were included in this study.

The influence of prosthesis designs and loading conditions on the stress distribution of tooth-implant supported prostheses.

The aim of this study was to observe the influence of prosthesis design and loading condition on the stress distributions of tooth-implant supported prostheses. Six 2D finite element models, two reference models, and four experimental models were computed to simulate different prosthesis designs. Six different loading conditions were applied to investigate the stress distributions of tooth and implant, respectively.

Colonization by Porphyromonas gingivalis and Prevotella intermedia from teeth to osseointegrated implant regions.

Colonization by periodontopathic bacteria is a risk factor for peri-implantitis. The purpose of this study was to investigate the colonization by black-pigmented anaerobic bacteria that occurs between the time before fixture installation and 6 months after inserting superstructures in implant treatment in partial edentulous cases. Dental plaque was serially collected from around the natural teeth and implants in 12 patients in whom a dental implant was indicated, and Porphyromonas gingivalis and Prevotella intermedia were detected using polymerase chain reaction (PCR).

Clinical evaluation of osseointegrated implants in Tokyo Dental College Hospital (third report): long-term observation of functioning survival rate of fixtures.

The objective of this report was to review 365 cases of Brånemark Implant Bridge including 1,444 fixtures in patients of Tokyo Dental College Chiba Hospital. The term of implantation was divided into several phases; less than 1 year, from 1 year to 3 years, from 3 years to 5 years, from 5 years to 7 years, from 7 years to 10 years, more than 10 years, and the survival rate was calculated for each phase. The removal rate of fixture after connecting the superstructure was 13% in maxillary cases and 2% in mandibular cases.

Transmission of periodontal disease-associated bacteria from teeth to osseointegrated implant regions.

Purpose: The presence of periodontopathic bacteria is a risk factor for peri-implantitis. The present study examined colonization by periodontopathic bacteria and their transmission from periodontal pockets to osseointegrated implant sulcus.

Materials And Methods: Plaque samples were collected from 105 sites in the 15 patients who participated in the study.