Interactions of fibroblasts with soldered and laser-welded joints.
Relatively little is known about the biocompatibility of the soldered or laser-welded joints of dental appliances. We investigated the reaction of human gingival fibroblasts cultured in vitro in direct contact with samples of soldered and laser-welded joints from orthodontic lingual arches. Contrast phase light microscopy was used to evaluate cell adhesion, morphology and proliferation after 6 and 24h and after 7 and 16 days. Scanning electron microscopy (SEM) was performed at 16 days. Our in vitro findings provide evidence that laser-welded orthodontic appliances have superior fibroblast biocompatibility.
Solmi
R
R
Istituto di Istologia ed Embriologia Generale, Università di Bologna,Via Belmeloro 8, Bologna 40126, Italy. solmi@alma.unibo.it
Martini
D
D
Zanarini
M
M
Isaza Penco
S
S
Rimondini
L
L
Carinci
P
P
Borea
G
G
Ruggeri
A
A
D000328:Adult; D002448:Cell Adhesion; D002455:Cell Division; D048429:Cell Size; D002470:Cell Survival; D002478:Cells, Cultured; D012994:Dental Soldering / Q000009:adverse effects*; D019544:Equipment Failure Analysis; D005347:Fibroblasts / Q000473:pathology* / Q000502:physiology*; D005549:Foreign-Body Reaction / Q000209:etiology / Q000473:pathology*; D005881:Gingiva / Q000473:pathology* / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008422:Materials Testing / Q000379:methods; D016910:Orthodontic Brackets / Q000009:adverse effects*