Longitudinal Study of Magnetic attachments

–Investigation of Probing Depth on Abutment teeth Part.3-

Rui Ito, Mamoru Miwata, Rui Ito, Kazumoto Hoshiai, Yoshinobu Tanaka, Tomohiko Ishigami¹⁾, Kanji Ishibasi²⁾, Eiichi Bando³⁾, Hideki Sasaki⁴⁾, Hiroshi Mizutani⁵⁾ and Toshio Hosoi⁶⁾

Department of Removable Prosthodontics , School of Dentistry, Aichi-Gakuin University　

¹Department of Partial Denture Prosthodontics , Nihon University School of Dentistry　

²Department of Fixed Prosthodontics , School of Dentistry , Iwate Medical University　

³Department of Fixed Prosthodontics , Institute of Health Biosciences Graduate School The University of Tokushima 　

⁴Sasaki Dental clinic　

⁵Section of Removable Proshodontics Graduate School, Tokyo Medical and Dental University 　

⁶Department of Removable prosthodontics, Turumi University School of Dental Medicine

Abstract

【Objective】Prospective investigation of magnetic attachments has been carried out since 2003 at the Japanese Society of Magnetic Applications in Dentistry.（JSMAD）The objective of this study was reveal the effect of removable partial denture on periodontal health of abutment teeth of magnetic attachments. The result of comparison by condition of abutment teeth was reported in investigation of Probing Depth of abutment teeth Part.2. This time,the comparison by tooth classification was reported.

【Method】The transition of probing depth (PD) of the abutment teeth was measured and the changes of the conditions of periodontal tissue were evaluated. Immediately after cementation, oral conditions were recorded by use of an original questionnaire, and PD were measured by the 6 points method. After 5 years, the patients were recalled and PD was measured.

【Result】Probing depth of magnetic attachments in Kennedy �U,�V, Eichner B and that of abutment teeth adjacent to one sided intermediary defect were increased over 5 years period