4-META/MMA-TBBレジンによる直接歯髄覆罩後の歯髄の病理組織学的変化(第1報) Histo-Pathological Changes in Dental Pulp Capped with 4-META/MMA-TBB Resin (Report 1)

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成犬の前歯と前臼歯53歯を露髄させ,直接歯髄覆罩材(剤)としてオルソマイトスーパーボンド®を用いた場合(SB群)と対照としてカルビタール®を用いた場合(CV群)について,14日例と30日例の歯髄の病理組織学的変化を観察した.<BR>1)創面下の歯髄に好中球やリンパ球などの炎症性細胞浸潤が観察された症例は,SB群では14日例が4例(23.5%),30日例が8例(57.1%)であり,CV群では14日例が5例(38.5%),30日例が2例(22.2%)であった.<BR>2)歯髄の一部壊死がSB群30日例の2例(14.3%)に,歯髄の全部壊死がCV群14日例の2例(15.4%)とCV群30日例の2例(22.2%)にみられた.<BR>3)残存歯髄の出血および血管拡張などの循環障害は,SB群では14日例の10例(58.8%)と30日例の6例(42.9%),CV群では14日例の6例(46.2%)と30日例の4例(44.4%)にみられた.<BR>4)マクロファージの出現は,SB群では14日例の8例(47.1%)と30日例の10例(71.4%)に,CV群では14日例の7例(53.8%)と30日例の4例(44.4%)にみられた.<BR>5)象牙質橋の形成は,SB群14日例の12例(70.6%),CV群14日例の1例(7.7%)とCV群30日例の3例(33.3%)に観察されたが,SB群30日例では皆無であった.

The purpose of this study was to evaluate histopathologically the 4-META/MMA-TBB resin as a direct pulp capping material.<BR>Fifty-three Class V or Class I deep cavity were prepared in four beagle dogs under general anesthesia. Without local anesthesia, cavity floors were intentionally perforated to expose the pulp. Sunmedical Co.4-META/MMA-TBB resin “Orthomite Super Bond” was directly applied to the exposed pulp (SB group). As the control, Neo Dental Chemical Products Ca(OH)<SUB>2</SUB> medicament “Calvital” was used as a direct pulp capping agent (CV group). Both in the SB groups and in the CV groups, the cavities were lined with “Orthomite Super Bond” and filled with the Kuraray Co. composite resin “Clearfil Photo Anterior” after etching and bonding. After 14 and 30 days, the histo-pathological responses of the pulp were analyzed. The number of the cases in each of the groups was: SB-14 days (17 cases), SB-30 days (14 cases), CV-14 days (13 cases) and CV-30 days (9 cases).<BR>1 ) Inflammatory cells infiltrated into the pulp: 4 cases (23.5%) in the SB-14 day group,8 cases (57.1%) in the SB-30 day group,5 cases (38.5%) in the CV-14 day group and 2 cases (22.2%) in the CV-30 day group.<BR>2 ) Partial necrosis of the pulp was observed in the 2 cases (14.3%) in the SB-30 day group. Complete necrosis of the pulp was observed in the 2 cases (15.4%) in the CV-14 day group and in the 2 cases (22.2%) in the CV-30 day group.<BR>3 ) Circulatory disturbances in the remaining pulp: 10 cases (58.8%) in the SB-14 day group,6cases (42.9%) in the SB-30 day group,6 cases (46.2%) in the CV-14 day group and 4 cases (44.4%) in the CV-30 day group.<BR>4 ) Macrophage migration aroud the interface between pulp and capping materials: 8 cases (47.1%)in the SB-14 day group,10 cases (71.4%) in the SB-30 day group,7 cases (53.8%) in the CV-14day group and 4 cases (44.4%) in the CV-30 day group.<BR>5 ) Dentin bridge formation: 12 cases (70.6%) in the SB-14 day group, none in the SB-30 day group,1 case (7.7%) in the CV-14 day group and 3 cases (33.3%) in the CV-30 day group.<BR>6 ) In all of the 4 groups, the SB-14 day group showed the best histo-pathological results, however, the results of the SB-30 day group was poor.

収録刊行物

  • 小児歯科学雑誌

    小児歯科学雑誌 35(3), 401-409, 1997-06-25

    The Japanese Society of Pediatric Dentistry

参考文献:  34件中 1-34件 を表示

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10013867212
  • NII書誌ID(NCID)
    AN00116228
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05831199
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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