Periodontal disease as a risk for dental implant failure over time: a long-term historical cohort study.

Objectives: To evaluate the long-term survival rates of dental implants according to the patient's periodontal status, as well as to estimate if the effect of periodontal status regarding implant failure is constant throughout the long-term follow-up.

Materials And Methods: This was a historical prospective cohort study design of all consecutive patients operated from 1996 to 2006 at a periodontal clinic. The cohort consisted of 736 patients, with a total of 2336 dental implants.

Smoking, diabetes mellitus, periodontitis, and supportive periodontal treatment as factors associated with dental implant survival: a long-term retrospective evaluation of patients followed for up to 10 years.

Objectives: To evaluate the factors associated with long-term implant survival in a large cohort of patients in regular follow-up until data collection.

Methods: The study population consisted of 475 patients who were referred to a private clinic limited to Periodontics and Implantology between November 1995 and July 2006. Data were collected from patient files with regards to smoking habits, periodontal condition, diabetes mellitus, implant survival, and time when implant failure occurred.

The clinical effectiveness of 6 mm diameter implants.

Background: Five- and 6 mm diameter screw-type endosseous implants have been used for the last decade. While some studies have reported very promising results (94% to 98% success rate), others have demonstrated survival rates below those clinically acceptable (75% to 87%). Moreover, such implants have been associated with increased cervical bone resorption and thread exposure.

Maackia amurensis agglutinin discriminates between normal and chronic leukemic human lymphocytes.

Altered glycosylations of cell surface glycoproteins often accompany malignant transformation and lectins are useful for probing these alterations. Lymphocytes exhibit characteristic surface glycoproteins which serve as markers of cell status and development. The present work was undertaken to compare, on blots, the binding characteristics of membranes isolated from normal peripheral blood lymphocytes and chronic lymphatic leukemia cells to five different lectins, from Datura stramonium, Maackia amurensis, Sambucus nigra, Galanthus nivalis and Peanut.