Root surface etching at neutral pH promotes periodontal healing
作者:
Johan Blomlöf,
Leif Jansson,
Leif Biomlöf,
Sven Lindskog,
期刊:
Journal of Clinical Periodontology
(WILEY Available online 1996)
卷期:
Volume 23,
issue 1
页码: 50-55
ISSN:0303-6979
年代: 1996
DOI:10.1111/j.1600-051X.1996.tb00504.x
出版商: Blackwell Publishing Ltd
关键词: citric acid;dentin;EDTA;etching;histomorphometry;monkey
数据来源: WILEY
摘要:
AbstractThe purpose of the present investigation was to examine whether an etching agent operating at neutral pH (EDTA) can enhance healing compared to a low pH etching agent (citric acid) in an animal model. Maxillary molars and premolars. in total 32 teeth, in 4 monkeys were divided between test (EDTA or citric acid treatment) and matched control groups. Periodontal surgery on both palatal and buccal roots using the dehiscence model was performed with or without root surface etching. Healing results were evaluated histomorphometrically after 8 weeks. The statistically significant differences between EDTA treated surfaces (n= 15) and control surfaces (n=11) were approximately 10% less failure (gingival recession and periodontal pocket), 10 to 15% more total histological attachment (long epithelial junction, connective tissue and reparative cementum), approximately 20% less long epithelial junction and approximately 20% more connective tissue in roots etched with EDTA. The statistically significant differences between citric‐acid‐treated surfaces (n=14) and control surfaces (n=11) were approximately 10% more connective tissue and 15% less long epithelial junction in the citric acid etched roots. Thus, etching with EDTA appeared to improve healing, avoiding the superficial necrotizing effect on exposed periodontal tissues by citric acid documented in previous studies. Although etching at present is not routinely‐applied in conventional periodontal therapy, future potential applications of etching at neutral pH may include exposure of the collagenous matrix of dentin for retention of biologically active substances, such as growth factors. Such treatment may be argued to produce a biocompatible surface more conducive to periodontal membrane cell colonization after removal of root‐surface‐associated smear without compromising the vitality of the surrounding per
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