Interleukin- 1 gene polymorphisms as assessed in a 10-year study of patients with early-onset periodontitis.

Our 10-year study of early-onset periodontitis (EOP) patients includes repeated clinical observations, microbiological characteristics and analysis of genetic polymorphism of IL-1A and IL-1B genes. Twenty patients (age 15-26 years) were divided according to the clinical status in the 4th year into a group with mean number of teeth with bleeding on probing (BP) 9.8 and mean number of teeth with periodontal pocket (PP) 2.

Th1 and Th2 cytokine profile in patients with early onset periodontitis and their healthy siblings.

Early onset periodontitis (EOP) is a chronic inflammatory periodontal disease with a strong genetic link affecting individuals aged 17 to 25. In the familial studies we tested the hypothesis about the role of Th1 and Th2 cytokines in the pathogenesis of EOP disease. The study involved 6 individuals with EOP disease and their 6 siblings with healthy periodontium.

Noncontact Er:YAG laser ablation: clinical evaluation.

Objective: The aim of this study is to evaluate the quality of laser ablation in comparison with the classical drilling preparation.

Methods: For the experiment, the Er:YAG laser drilling machine was used. The system had a laser head, water cooler, and power supply with automatic control.

Dentin and pulp response to Erbium:YAG laser ablation: a preliminary evaluation of human teeth.

Objective: We determined the real effect of Erbium:YAG laser ablation on human teeth in vivo.

Summary Background Data: We advocated the idea that overheating of teeth, specially pulp damage can be avoided if correct laser parameters are used.

Methods: We evaluated human premolars scheduled for extraction during orthodontic treatment.

Evaluation of the surface changes in enamel and dentin due to possibility of thermal overheating induced by Erbium:YAG laser radiation.

This study investigates the thermal danger of Erbium (Er):YAG laser ablation. Classical preparation techniques have many disadvantages caused by unfavorable changes of temperature, pressure, and by mechanical vibrations. The effect of mechanical vibrations and pressure is eliminated by use of laser ablation technique.