SULIMAN
(Cavitec) mended.
and light-cured
base material
is not recom3.
The combination of Cavalite and VLC Dycal materials had the least microleakage in this study. The groups of TimeLine and VLC Dycal, Cavalite and Life, and Cavalite and Ketac Bond materials had moderate leakage, but it was less than the remaining groups (groups 1, 3 through 5, 8, and 10 through 14). However, they were not statistically significant. To measure the length of microleakage by digitization was effective becauseit was possibleto measure the length accurately even on irregular surfaces.
1. Sawusch RH. Direct and indirect pulp capping with two new products. J Am Dent Assoc 1982;104:459-62. 2. Stanley HR, Pameijer CH. Pulp capping with a new visible-light-cur-
Shane Seung University
N. White, K. Kang, of Southern
crown
School
of Dentistry,
6.
7. 8.
Reprint
requests
and fixed
BDentSc, MS,a John A. Sorensen, DDS, MSyC and Angelo A. Caputo, California,
5.
ing calcium hydroxide composition (Prisma VLC Dycal). J Qper Dent 1985;10:156-63. Robbins JW. The placement of bases beneath amalgam restorations: review of literature and recommendations for use. 3 Am Dent Assoc 1986;113:910-2. Santos JFF, Steagall L, Bianco A. Strength of cement bases. J Oper Dent 1978;3:122-7. Pashley EL, Tao L, Pashley DH. The sealing properties of temporary filling materials. J PROSTHET DENT 1988;60:292-7. Cox CF, Keall CL, Keall HJ, Ostro E, Bergenholtz G. Biocompatibility of surface-sealed dental materials against exposed pulps. J PROSTHET DENT 1987$7:1-a. Millstein PL, Nathanson D. Effect of eugenol and eugenol cements on cured composite resin. 3 PROSTHET Dwr 1983;50:211-5. Gegauff AG, Rosen&e1 SF. Effect of provisional Ming agents on provisional resin additions. Quintessence Int 1987;18:841-5. to:
DR. KAI CHIU CHAN COLLEGE OF DENTISTRY UNIVERSITY 0F IOWA IOWA CITY, IA 52242-1068
REFERENCES
e of new
4.
AND GHAN
artial
den
DMD,b PhDd
Los Angeles,
Calif.
This study measured the in vitro microleakage of conventional and new FPD luting agents. Standardized preparations were made on 42 freshly extracted premolars. Facial and lingual chamfer margins were placed in enamel, mesial and distal in dentin and cementum, and castings were made in Rexillium III alloy and were then cemented with a standardized technique. Six groups of seven samples were tested, (1) polycarboxylate, (2) zinc phosphate, (3) glass ionomer, (4) Den-Mat Thin Film cement, (5) Panavia Ex, and (6) Den-Mat Thin Film cement with Tenure. The ranking of groups for stain ingress was from the greatest (1) to the least (6). A one-way analysis of variance and Tukey-Student range analysis revealed significantly similar groups, p
(Cavitec) mended.
and light-cured
base material
is not recom3.
The combination of Cavalite and VLC Dycal materials had the least microleakage in this study. The groups of TimeLine and VLC Dycal, Cavalite and Life, and Cavalite and Ketac Bond materials had moderate leakage, but it was less than the remaining groups (groups 1, 3 through 5, 8, and 10 through 14). However, they were not statistically significant. To measure the length of microleakage by digitization was effective becauseit was possibleto measure the length accurately even on irregular surfaces.
1. Sawusch RH. Direct and indirect pulp capping with two new products. J Am Dent Assoc 1982;104:459-62. 2. Stanley HR, Pameijer CH. Pulp capping with a new visible-light-cur-
Shane Seung University
N. White, K. Kang, of Southern
crown
School
of Dentistry,
6.
7. 8.
Reprint
requests
and fixed
BDentSc, MS,a John A. Sorensen, DDS, MSyC and Angelo A. Caputo, California,
5.
ing calcium hydroxide composition (Prisma VLC Dycal). J Qper Dent 1985;10:156-63. Robbins JW. The placement of bases beneath amalgam restorations: review of literature and recommendations for use. 3 Am Dent Assoc 1986;113:910-2. Santos JFF, Steagall L, Bianco A. Strength of cement bases. J Oper Dent 1978;3:122-7. Pashley EL, Tao L, Pashley DH. The sealing properties of temporary filling materials. J PROSTHET DENT 1988;60:292-7. Cox CF, Keall CL, Keall HJ, Ostro E, Bergenholtz G. Biocompatibility of surface-sealed dental materials against exposed pulps. J PROSTHET DENT 1987$7:1-a. Millstein PL, Nathanson D. Effect of eugenol and eugenol cements on cured composite resin. 3 PROSTHET Dwr 1983;50:211-5. Gegauff AG, Rosen&e1 SF. Effect of provisional Ming agents on provisional resin additions. Quintessence Int 1987;18:841-5. to:
DR. KAI CHIU CHAN COLLEGE OF DENTISTRY UNIVERSITY 0F IOWA IOWA CITY, IA 52242-1068
REFERENCES
e of new
4.
AND GHAN
artial
den
DMD,b PhDd
Los Angeles,
Calif.
This study measured the in vitro microleakage of conventional and new FPD luting agents. Standardized preparations were made on 42 freshly extracted premolars. Facial and lingual chamfer margins were placed in enamel, mesial and distal in dentin and cementum, and castings were made in Rexillium III alloy and were then cemented with a standardized technique. Six groups of seven samples were tested, (1) polycarboxylate, (2) zinc phosphate, (3) glass ionomer, (4) Den-Mat Thin Film cement, (5) Panavia Ex, and (6) Den-Mat Thin Film cement with Tenure. The ranking of groups for stain ingress was from the greatest (1) to the least (6). A one-way analysis of variance and Tukey-Student range analysis revealed significantly similar groups, p
