Scanning electron microscopic analysis of diseased and healthy dental hard tissues after Er:YAG laser irradiation:: In vitro study

被引:106
作者
Armengol, V
Jean, A
Rohanizadeh, R
Hamel, H
机构
[1] UFR Odontol, Dept Odontol Conservatr Endodontie, F-44042 Nantes 01, France
[2] Ctr Rech Interdisciplinaire Tissus Calcifies & Bi, Nantes, France
关键词
D O I
10.1016/S0099-2399(99)80376-8
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
The aim of this study was to treat carious lesions, sound dentin, and enamel either with conventional methods or with an Er:YAG laser and to compare the results. Thirty freshly extracted carious human teeth were divided into two groups, In the first group, lesions were treated with burs in a dental handpiece; in the second group, we used the Er:YAG laser with parameters recommended by the manufacturer (Kavo), After treatment, the teeth were prepared for scanning electron microscopic observation. On laser-treated teeth, scaly, flaky, rough surfaces were seen: surfaces were clean with several morphological reliefs that may enhance bonding resin restoration. The Er:YAG laser beam can ablate carious dentin with an energy level of 250 mJ at 2 Hz. Sound dentin can be cut at 300 mJ and 2 Hz; for enamel, 350 mJ and 3 Hz are required. The Er:YAG laser seems to be effective in the treatment of carious lesions and in cavity preparation in vitro.
引用
收藏
页码:543 / 546
页数:4
相关论文
共 21 条
[1]   IN-VITRO STUDIES ON LASER SCALING OF SUBGINGIVAL CALCULUS WITH AN ERBIUM-YAG LASER [J].
AOKI, A ;
ANDO, Y ;
WATANABE, H ;
ISHIKAWA, I .
JOURNAL OF PERIODONTOLOGY, 1994, 65 (12) :1097-1106
[2]   PRELIMINARY INVESTIGATION OF THE HISTOLOGICAL EFFECTS OF LASER ENDODONTIC TREATMENT ON THE PERIRADICULAR TISSUES IN DOGS [J].
BAHCALL, J ;
HOWARD, P ;
MISERENDINO, L ;
WALIA, H .
JOURNAL OF ENDODONTICS, 1992, 18 (02) :47-51
[3]   SCANNING ELECTRON-MICROSCOPIC ANALYSIS OF CANAL WALL DENTIN FOLLOWING NEODYMIUM-YTTRIUM-ALUMINUM-GARNET LASER IRRADIATION [J].
DEDERICH, DN ;
ZAKARIASEN, KL .
JOURNAL OF ENDODONTICS, 1984, 10 (09) :428-431
[4]  
Fried D, 1996, J Biomed Opt, V1, P455, DOI 10.1117/12.250668
[5]   EXPERIMENTAL STUDIES OF THE APPLICATION OF THE ER YAG LASER ON DENTAL HARD SUBSTANCES .1. MEASUREMENT OF THE ABLATION RATE [J].
HIBST, R ;
KELLER, U .
LASERS IN SURGERY AND MEDICINE, 1989, 9 (04) :338-344
[6]  
HIBST R, 1996, SPIE, V2623, P139
[7]   EXPERIMENTAL STUDIES OF THE APPLICATION OF THE ER YAG LASER ON DENTAL HARD SUBSTANCES .2. LIGHT MICROSCOPIC AND SEM INVESTIGATIONS [J].
KELLER, U ;
HIBST, R .
LASERS IN SURGERY AND MEDICINE, 1989, 9 (04) :345-351
[8]  
KELLER U, 1990, SPIE, V9, P408
[9]   CLEANING AND SHAPING THE ROOT-CANAL WITH A ND-YAG LASER-BEAM - A COMPARATIVE-STUDY [J].
LEVY, G .
JOURNAL OF ENDODONTICS, 1992, 18 (03) :123-127
[10]   BONE ABLATION WITH ER-YAG AND CO-2 LASER - STUDY OF THERMAL AND ACOUSTIC EFFECTS [J].
LI, ZZ ;
REINISCH, L ;
VANDEMERWE, WP .
LASERS IN SURGERY AND MEDICINE, 1992, 12 (01) :79-85