Complications and treatment errors in nonsurgical periodontal therapy.

Nonsurgical periodontal therapy can be subject to iatrogenesis, which includes all the complications directly or indirectly related to a treatment. These complications include both operator-dependent harms and errors and the consequences and adverse effects of the therapeutic procedures. The complications arising following nonsurgical periodontal treatment can be categorized as intraoperative and postoperative and can affect both soft and hard tissues at an intra-oral and extraoral level.

The influence of non-carious lesions in the surgical treatment of gingival recession: A systematic review & meta-analysis.

Background: The presence of a non-carious cervical lesion (NCCL) is a complicating factor for tooth coverage following gingival recession. It is generally associated with disappearance of the enamel-cementum junction, a key landmark, and a surface discrepancy requiring restoration or compensation using a connective tissue graft (CTG). The aim of this systematic review is to study the efficacy of periodontal plastic surgery on recession defects associated with a NCCL, with or without restorative treatment.

Relationship between thumb laxity and trapezium kinematics.

Objectives: To investigate the relationship between thumb laxity (passive mobility), shape of the trapezium and trapezial mobility relative to the second metacarpal.

Methods: Sixty normal volunteers were assessed for the amount of thumb laxity by measuring the shortest distance of the thumb nail to the radius when the thumb was forcefully approximated to the forearm with the wrist in flexion. The inclination of the distal surface of the trapezium (angle β) and the mobility of the trapezium relative to the II metacarpal (Δangle α) were assessed using dynamic X-rays in maximal radial and ulnar deviation.