摘要:

Summary.This study compared the pulpal responses to two innovative semihydrous glass ionomer luting cements (STA1and ZIN2) with those previously obtained for a conventional anhydrous giass ionomer luting cement, Aquacem3. ZIN contained zinc oxide in the formulation. The study was conducted according to the BSI (1989) recommendations for testing restorative materialsin vivo. ZIN was associated with minimal pulpal changes and mtcrobial microieakage, and differed little from the control material, Kalzinol4. The pulpal response to STA was similar to that observed for Aquacem, but was associated with less microbial microieakage. The statistical model demonstrated a significant association between bacterial presence within the experimental cavity and pulpal inflammation. The closer that bacteria were to the pulp, the more severe was the ensuing inflammation.

ISSN:0143-2885    

DOI:10.1111/j.1365-2591.1991.tb00115.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

Summary.The pulpat reaction associated with a composite resin alone and composite resin used in conjunction with two dentine bonding agents was studied. Class V cavities were prepared on the labial surfaces of the canine teeth of 18 male ferrets. After acid etching of the enamel margins, the cavities were restored with either a composite resin alone or in combination with one of two dentine bonding agents, Scotchbond and Gluma. One cavity in each animal was filled with Kalzinol as a control. The animals were killed after 7, 14 and 28 days. After histoiogicat processing, the pulpal changes were assessed qualitatively and quantitatively according to standard criteria.There were variations in the pulpal response at all time intervals. The responses to the two dentine bonding agents were similar to those found with composite resin alone. No pulpal inflammation was observed in the control teeth. Gram‐positive micro‐organisms were identified at the interface of restoration and cavity wall, or within the dentinal tubules in virtually all cases in which pulpal inflammation was obser

ISSN:0143-2885    

DOI:10.1111/j.1365-2591.1991.tb00116.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

Summary.The antibacterial effect of calcium hydroxide as a short‐term intracanal dressing was clinically evaluated by applying the medicament for 10 minutes or 7 days in root canals of teeth with periapical lesions. The results showed that the 7‐day dressing efficiently eliminated bacteria which survived biomechanical instrumentation of the canal, while the 10‐minute application was ineffe

ISSN:0143-2885    

DOI:10.1111/j.1365-2591.1991.tb00117.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

Summary.The pulp and dentine of permanent incisors in 13 young monkeys were exposed by grinding. The pulpat perforations were treated by partial pulpotomy with a tungsten carbide fissure bur after exposure for 4, 48, or 168 hours in nine animals, and by direct pulp capping after exposure for 4 or 48 hours in the remaining four animals. After haemostasis, the pulpal wounds were covered with calcium hydroxide (Dycal), followed by conventional amalgam (Revalloy). Initial and subsequent formation of hard tissue bridges over the wounds was studied by conventional histology after 1–6 months. Screening showed three categories of initial bridging development, differing in nature and rate of formation. A significant difference in the distribution of the two main categories was found between the two methods of treatment(P<0.02). A similar difference was observed when partial pulpotomy was performed after 168 hours compared with that performed after 4 hours (P=0.055). No relationship was found between the initial bridging category and the eventual development of complete dentine bridge

ISSN:0143-2885    

DOI:10.1111/j.1365-2591.1991.tb00118.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

Summary.The use of the calcium hydroxide‐containing root canal sealer, Sealapex, has been questioned regarding its predisposition to solubility and subsequent effect on the root canal seal and periradicular healing. This case report demonstrates, radiographically, dissolution of excess sealer in the periradicular tissues with subsequent osseous repair which was similar to healing in periradicular tissues where there was no extruded seale

ISSN:0143-2885    

DOI:10.1111/j.1365-2591.1991.tb00119.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

Book reviews in this article:Endodontics in Practice2nd edn, C. J. R. Stock and C. F. Nehammer.Essentials of Traumatic Injuries to the TeethJ. O. Andreasen and F.M. Andreasen.

ISSN:0143-2885    

DOI:10.1111/j.1365-2591.1991.tb00120.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

ISSN:0143-2885    

DOI:10.1111/j.1365-2591.1991.tb00121.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

ISSN:0143-2885    

DOI:10.1111/j.1365-2591.1991.tb00122.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY