Effects of citric acid on cultured human osteoblastic cells.

We investigated the effects of citric acid (CA) on cultured human osteoblastic (HOB) cells by evaluating cell adhesion, proliferation, and cytotoxicity. (3)H-Thymidine-labeled HOB cells were incubated in culture medium supplemented or not with 4%, 6%, 8%, or 10% CA for 1 minute. After incubation, cell morphology was evaluated by Nomarski interferential light microscopy, cell proliferation was accessed by measurements of (3)H-thymidine associated to the cells, and cell lysis was monitored by measuring the amount of (3)H-thymidine released by cells.

Correlation between mothers' perceptions/expectations and the behavior of children with HIV during dental treatment.

The aim of this study was to evaluate the mothers' perceptions and expectations of the behavior of their children who were HIV positive, during dental treatment. The sample was composed of 40 mother and child pairs. The mothers answered seven questions during two different appointments (M1, the child's initial appointment, and M2, the child's treatment appointment) in order to identify their perceptions and expectations about their children's behavior during dental treatment.

Langerhans cell histiocytosis: impact on the permanent dentition after an 8-year follow-up.

Langerhans cell histiocytosis (LCH) is a rare disorder which mainly affects children. Oral changes, such as gingival ulceration, halitosis, osseous lesions associated with tooth mobility, and early loss of primary teeth, comprise the disease's first manifestations for most patients. In the long term, dental changes may occur as a result of dental and systemic treatment.

Self-inflicted oral trauma in a baby with Moebius syndrome.

Moebius syndrome (MS) is a rare disorder mainly characterized by bi- or unilateral palsy of the facial and abducens nerves. Among the various orofacial characteristics related to this syndrome, the following are pointed out, difficulty with sucking, tongue malformation, mandibular hypoplasia, saliva drooling, arched palate and micrognathia. In spite of the diversity of oral features described for these patients, self-inflicted oral trauma has not yet been reported.