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変色した歯の漂白。各種漂白剤の効果の検討・評価
[Bleaching of discolored teeth. Examination and evaluation of the effect of various bleaching agents].
PMID: 2489326
抄録
歯の変色に悩む患者は多く,特に前歯が不規則に生えている場合には,一般に考えられている以上に心理的苦痛を生じる。本研究では、変色した歯に塗布した各種薬剤の漂白効果を調べるための試験を行った。漂白対象としては,血液,着色組織液IおよびIIを1週間自然暴露した後に濾紙に付着させたものを選んだ。各被験者を30%過酸化水素溶液(30%H2O2),3%過酸化水素溶液(3%H2O2),次亜塩素酸ナトリウム溶液(NaOCl),過ホウ酸ナトリウム(NaBO3)およびそれらの組み合わせに浸し,薬剤の効果を経時的に観察した。その結果、以下のような結果が得られた。1.NaOClが最も効果的であった。2.3%H2O2の作用は遅く,1週間後にはわずかな漂白効果しか見られなかった。3.3.NaBO3だけでは、漂白効果はなかった。
Many patients suffer from tooth discoloration, a condition that produces more psychological distress than generally thought, especially when the anterior teeth are involused. In this study, tests were carried out to determine the effect of various agents applied discolored teeth for bleaching. Blood, colored tissue fluids I and II, attached to filter papers after being naturally exposed for a week were selected as object bleaching. Each subject was soaked in 30% hydrogen peroxide solution (30%H2O2), 3% hydrogen peroxide (3%H2O2), sodium hypochlorite solution (NaOCl), sodium perborate (NaBO3) and combination of them, then effect of agents were observed according to time-lapse. The following results were obtained. 1. NaOCl was most effective. 2. The action of 3%H2O2 was slow, showing only a slight bleaching effect after one week. 3. NaBO3 alone did not have any bleaching effect.