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Pathohistological characteristics of gingival tissue in orthodontic patients with nickel and titanium allergies (CROSBI ID 678849)

Prilog sa skupa u časopisu | sažetak izlaganja sa skupa | međunarodna recenzija

Žigante, Martina ; Matušan Ilijaš, Koviljka ; Peternel, Sandra ; Rinčić Mlinarić, Marijana ; Špalj, Stjepan Pathohistological characteristics of gingival tissue in orthodontic patients with nickel and titanium allergies // European journal of orthodontics. 2019. doi: 10.1093/ejo/cjz073

Podaci o odgovornosti

Žigante, Martina ; Matušan Ilijaš, Koviljka ; Peternel, Sandra ; Rinčić Mlinarić, Marijana ; Špalj, Stjepan

engleski

Pathohistological characteristics of gingival tissue in orthodontic patients with nickel and titanium allergies

AIMS: Nickel (Ni) and titanium (Ti) are constituent elements of orthodontic alloys and both can cause contact allergic stomatitis. The spectrum of signs and symptoms of oral contact allergy is wide. There is no single pathognomonic sign or specific clinical picture. The aim of this research was to assess the pathohistological changes in gingival tissue in orthodontically treated patients with an allergy to Ni and/or Ti. SUBJECTS AND METHOD: Patients undergoing orthodontic therapy with gingival hyperplasia were subjected to initial periodontal therapy. In those with persisting gingival enlargement after initial periodontal therapy, an external gingivectomy was performed (N = 29). Gingival fragments were processed with the paraffin- embedding histological technique and stained with haematoxylineosin. Allergy to Ni and Ti was diagnosed after performing a patch test on the upper arm skin. Allergens included nickel sulphate, titanium, titanium dioxide, titanium oxalate, titanium nitride and petrolatum as the control. RESULTS: An allergy was present in 35 per cent of the subjects. The gingiva of allergic subjects demonstrated a slightly higher severity of inflammation and fibrosis, somewhat more frequently epithelial changes (mild hyperplasia, spongiosis but also colliquation of basal layers), and focal inflammatory infiltrates. Also, in allergic subjects inflammation was often localized near the basal membrane. Lymphocytes, histiocytes, plasma cells, eosinophils and neutrophils were present. However, the majority of pathohistological findings did not differ between groups at a statistically significant level. Pronounced exocytosis and band-like inflammatory infiltrates were significantly more often present in allergic subjects (P < 0.05). CONCLUSION: The presence of exocytosis and band- like inflammatory infiltrates appear to be the most characteristic signs of allergy to Ni and Ti in gingival tissue.

titanium ; nickel ; allergy ; orthodontic treatment

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Podaci o prilogu

SP299

2019.

nije evidentirano

objavljeno

10.1093/ejo/cjz073

Podaci o matičnoj publikaciji

European journal of orthodontics

Nica:

0141-5387

1460-2210

Podaci o skupu

95th Congress of the European Orthodontic Society

poster

17.06.2019-22.06.2019

Nica, Francuska

Povezanost rada

Dentalna medicina, Kliničke medicinske znanosti

Poveznice
Indeksiranost