A・A・ワノーフスキーのシェイクスピア研究 -ワノーフスキー資料より

departmental bulletin pape

A Case of Unerupted Lower Primary Second Molar Associated with Compound Odontoma

Odontoma is the most common type of benign odontogenic tumor, and often causes disturbances in the eruption of its associated tooth. Odontomas usually occur in the permanent dentition, and rarely occur solely in the primary dentition. This case report documents a six-year-old-child with a compound odontoma located in the mandible, which caused the impaction of the primary second molar

Systematic optimization of poly(vinyl chloride) surface modification with an aromatic thiol

Abstract The efficient covalent functionalization of poly(vinyl chloride) (PVC), which is widely used in medical device manufacture, allows an array of potential property-enhancing surface modifications to be made. To demonstrate a general method of functionalization via substituted (functional) thiols, we describe a systematic approach to the optimization of PVC surface modification by nucleophilic substitution with 4-aminothiophenol through control of reaction conditions: solvent composition, sonication, reaction time and presence of base and/or phase transfer catalyst (PTC). Efficient thiol attachment was confirmed using solid-state NMR and Raman spectroscopies, and the extent of surface modification was quantified using ATR-FTIR spectroscopy. Sonicated samples exhibited a lower degree of modification than their statically immersed counterparts (21.7 vs 99.6 μg cm-3), and mechanical integrity was compromised. In DMSO/H2O systems with a PTC, resultant degrees of PVC surface modification were up to 12.5% higher when caesium carbonate was employed as the base than in corresponding systems with potassium carbonate

Formative Factors of Membranous Substances on Dorsum of Tongue, Teeth, Buccal Mucosa in Elderly Persons Requiring Nursing Care

要介護者の口腔粘膜にみられる付着物は，痰，痂皮，剥離上皮と呼ばれているが，上皮成分を主体とした付着物を剥離上皮膜と定義づけ，本研究にて，要介護高齢者の口腔内に形成された剥離上皮膜を部位別に形成要因を検討した。調査対象者は，入院中の患者のうち65 歳以上の要介護高齢者70 名であった（81.1±7.7 歳）。入院記録より年齢，疾患，常用薬，寝たきり度を調査し，意識レベル，発語の可否，介助磨きの頻度は担当看護師から聴取した。歯科医師が口腔内診査を行い，膜状物質の形成の有無，Gingival Index などを評価した。形成された膜状物質は，歯科医師がピンセットで採取した。粘膜保湿度（舌背部，舌下粘膜）は，粘膜湿潤度試験紙（キソウエット®）により10秒法で評価した。採取された膜状物質は，通法に従ってパラフィン切片を作製し，HE 染色とサイトケラチン1 による免疫染色で重層扁平上皮か否かについて確認し，重層扁平上皮由来の角質変性物が認められたものを剥離上皮膜と判断した。剥離上皮膜形成の有無を従属変数として，患者背景・口腔内の14 項目，疾患の15 項目，常用薬の32項目，合計61項目を独立変数として部位ごとで決定木分析を行った。すべての部位で剥離上皮膜の形成に最優先される要因は「摂食状況」であり，経口摂取者には，剥離上皮膜がみられなかった。第2 位は舌背部で舌背湿潤度，頰部で開口，歯面の第3 位が開口であり，口腔粘膜の乾燥を示唆する結果であった。以上，剥離上皮膜の形成要因には口腔乾燥があり，保湿の維持が剥離上皮膜の予防につながると考えられた

摂食・嚥下障害とその対応

Dysphagia, eating dysfunction, is showed as a symptom in many diseases such as the apoplexy. The dentists who are engaged in the oral health have to concern the dysphagia rehabilitation actively. In the rehabilitation, the appropriate diagnosis and the evaluation are necessary and they are accomplished by the comparison with the normal function and/or the appropriate evaluation methods. It is helpful when the evaluation of eating function, dividing it into 7 steps as follows ; 1. The recognition phase. 2. The food intaking 3. The food processing (mastication) 4. Bolus formation 5. Swallowing oral phase. 6. Swallowing pharyngeal phase 7. Swallowing esophageal phase. The purpose and the methods of the rehabilitation become clear by confirming in which step dysfunction are occurred. After doing outside observation of eating and/or screening tests such as the water swallowing test in the bedside, a close examination, the videofluorography (VFFS) and/or the endoscope inspection (VE) and so on are implemented. The actual rehabilitation concludes 1. food environment guide 2. The food content guide 3. The functional training, and they are combined as necessary