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Dentistry on Stamps
RESEARCH
REPORTS
sions were not suited for disinfection by im m ersion. T h e acid-potentiated glutaraldehyde co ntributed to an im provem ent in surface q uality of stone dies com pared w ith the controls; however, the surface q u ality was acceptable for all com bina tions of im pression m aterials and d isin fectants.
------------------ JADA ------------------T h is p ap er was o rig in ally presented at the 65th G eneral Session of the In tern atio n al Association for D ental Research, 1987. Dr. Jo h n so n is assistant professor, an d Dr. D rennon is assistant professor, d ep artm en t of restorative den tistry, SM-56, U niversity of W ash in g to n , Seattle, 98195. Dr. Pow ell is associate professor, departm ent of p ath o lo g y , U niversity of U tah , Salt Lake City, 84412. Address requests for reprints to Dr. Jo h n so n . 1. L eung, R .L ., an d Schonfeld, S.E. G ypsum casts as a po ten tial source of m icrobial cross-contam ination. J Prosthet Dent 29(2):210-211, 1983. 2. US D ep artm en t of H ealth an d H u m a n Services. P reventing the transm ission of hepatitis B, AIDS, and herpes in dentistry. A tlanta, US D H H S P ublic H ealth Service. 3. C ouncil o n Dental T h erap eu tics, an d C ouncil on P rosthetic Services and D ental Laboratory R elations.
G uidelines for infection control in the dental office a n d the co m m ercial d e n ta l lab o rato ry . JA D A 110 (6):969-972, 1985. 4. U tzinger, R. AIDS in dentistry: a review of the literatu re an d p relim in ary recom m endations. Swiss Dent J 7(4): 17-27, 1986. 5. Schaefer, M.E. Infection control in d ental lab o ratory procedures. CDA J 13( 10):81 -84, 1985. 6. Rowe, A .H .R ., an d Forrest, J.O . D ental im pres sions: the pro b ab ility of co n tam in atio n and a m ethod of disinfection. Br D ent J 145(6): 184-186, 1978. 7. Bergm an, M.; O lsson, S.; and B ergm an, B. Elastom eric im pression m aterials. D im ensional stability and surface detail sharpness follow ing treatm ent w ith disinfectant solutions. Swed Dent J 4:161-167, 1980. 8. Storer, R., and McCabe, J.F. An investigation of m ethods available for sterilising im pressions. Br Dent J 151(7):217-220, 1981. 9. Setcos, J.C ., and others. D isinfection of a po ly ether d ental im pression m aterial. J D ent Res 64(Special Issue):244, abstract no. 620, 1985. 10. R hodes, C .J., an d others. Effect of com m ercial glutaraldehyde so lutions on elastom eric im pression m aterials. J D ent Res 64(Special issue):243, abstract no. 619, 1985. 11. M erchant, V.A., an d others. Prelim inary inves tigatio n of a m ethod for disinfection of dental im pres sions. J Prosthet Dent 52(6):877-879, 1984. 12. H errera, S.P., an d M erchant, V.A. D im ensional stability of dental im pressions after im m ersion disin fection. JADA 113(3 ):419-422, 1986. 13. Jo h n so n , G .H ., an d C raig, R.C. Accuracy of
Dentistry on Stamps new stam p h o n o rin g dentistry has been issued by India on the occasion of the 13th A sian-Pacific D ental Congress held in New Delhi from Jan 28 to Feb 1, 1988. In addition, a first-day cover and a special cancellation were made available. T h e A sian-Pacific Congress is a part of the Federation D entaire In tern atio n ale. In 1954, d u rin g the E ig h th India D ental Association m eeting, Professor M atsumiya suggested a jo in t conference of the Asian countries. T h e first conference of the A sian-Pacific D ental Federation took place in T okyo in 1955. T h e Federation has continued to meet at 3-year intervals in various Asian countries since 1955. T he members of the Federation include: A ustralia, Burma, G uam , H o n g Kong, In d ia, In d o n esia, Ja p a n , Korea, M alaysia, New Z ealand, P ak istan , P h ilip p in es, Singapore, and T h ailan d . A pproxim ately 3,000 persons attended the 13th Congress; its slogan was, “ H ealthy teeth m ean a healthy body.” T h e m ajor topics discussed were esthetic dentistry and public health dentistry in developing countries. T here were 40 scientific sessions on the congress program w ith three sim ultaneous sessions. Preconference courses on porcelain and partial dentures were also scheduled. A trade fair w ith more than 75 participants from around the w orld was held in conjunction w ith the congress. T h e 400-paise stam p shows a sm iling ru ral youth. T h e design was prepared by Shri M. D. Sharm a. T h e m ulticolor stam p was produced by photogravure an d was printed by the India Security Press. Overall size is 3.91 x 2.90 cm w ith p rin tin g size of 3.55 x 2.54 cm and perforation is 13 x 13. T he first-day cover shows a dentist at work w ith m odern equipm ent. T h e cancellation shows the logo of the India Dental A ssociation. We than k Dr. A shw in V. Patel of Vadodara, India, for bringing to ou r attention this new addition to dentistry on stamps. H annelore T. Loevy, CD, PhD A letha Kowitz, MA
530 ■ J A D A , V o l. 116, A p r i l 1988
four types of rubber im pression m aterials com pared w ith tim e of p o u r an d a repeat p o u r of models. J Prosthet D ent 53(4):484-490, 1985. 14. W iner, B.J. Statistical p rinciples in experim en tal design, ed 2. New York, M cG raw -H ill Book Co, 1971, p p 26-37, 149-196. 15. Siegel, S. N onparam etric statistics for the be havioral sciences. New York, M cG raw -H ill Book Co, 1956, p p 184-194. 16. H ellie, C.M ., and others. Q u an titativ e evalua tion of p ro x im al to oth m ovem ent effected by w edg ing: a p ilo t study. J P rosthet D ent 53(3):335-341, 1985. 17. C raig, R.G . A review of properties of rubber im pression m aterials. J M ich D ent Assoc 59(4):254261, 1977. 18. Stackhouse, J.A. T h e accuracy of stone dies m ade from ru b b er im pression m aterials. J Prosthet D ent 24(4):377-386, 1970. 19. Stackhouse, J.A. A com parison of elastic im pression m aterials. J Prosthet D ent 34(3):305-313, 1975. 20. Jo h n so n , G .H ., an d D rennon, D .G . C linical evaluation of detail reproduction of elastom eric im pression m aterials. J D ent Res 66(Special Issue):331, abstract no. 1794, 1987. 21. D urr, D.P., an d Novak, E.V. D im ensional sta bility of alg in ate im pressions im m ersed in disinfect in g solutions. J D ent C h ild 54(l):45-48, 1987. 22. B oucher, R .M .G . P o tentiated acid 1,5 pentanedial so lu tio n —a new chem ical sterilizing and disin fecting agent. Am J H o sp P h arm 31(6):546-557, 1974.
REPORTS
sions were not suited for disinfection by im m ersion. T h e acid-potentiated glutaraldehyde co ntributed to an im provem ent in surface q uality of stone dies com pared w ith the controls; however, the surface q u ality was acceptable for all com bina tions of im pression m aterials and d isin fectants.
------------------ JADA ------------------T h is p ap er was o rig in ally presented at the 65th G eneral Session of the In tern atio n al Association for D ental Research, 1987. Dr. Jo h n so n is assistant professor, an d Dr. D rennon is assistant professor, d ep artm en t of restorative den tistry, SM-56, U niversity of W ash in g to n , Seattle, 98195. Dr. Pow ell is associate professor, departm ent of p ath o lo g y , U niversity of U tah , Salt Lake City, 84412. Address requests for reprints to Dr. Jo h n so n . 1. L eung, R .L ., an d Schonfeld, S.E. G ypsum casts as a po ten tial source of m icrobial cross-contam ination. J Prosthet Dent 29(2):210-211, 1983. 2. US D ep artm en t of H ealth an d H u m a n Services. P reventing the transm ission of hepatitis B, AIDS, and herpes in dentistry. A tlanta, US D H H S P ublic H ealth Service. 3. C ouncil o n Dental T h erap eu tics, an d C ouncil on P rosthetic Services and D ental Laboratory R elations.
G uidelines for infection control in the dental office a n d the co m m ercial d e n ta l lab o rato ry . JA D A 110 (6):969-972, 1985. 4. U tzinger, R. AIDS in dentistry: a review of the literatu re an d p relim in ary recom m endations. Swiss Dent J 7(4): 17-27, 1986. 5. Schaefer, M.E. Infection control in d ental lab o ratory procedures. CDA J 13( 10):81 -84, 1985. 6. Rowe, A .H .R ., an d Forrest, J.O . D ental im pres sions: the pro b ab ility of co n tam in atio n and a m ethod of disinfection. Br D ent J 145(6): 184-186, 1978. 7. Bergm an, M.; O lsson, S.; and B ergm an, B. Elastom eric im pression m aterials. D im ensional stability and surface detail sharpness follow ing treatm ent w ith disinfectant solutions. Swed Dent J 4:161-167, 1980. 8. Storer, R., and McCabe, J.F. An investigation of m ethods available for sterilising im pressions. Br Dent J 151(7):217-220, 1981. 9. Setcos, J.C ., and others. D isinfection of a po ly ether d ental im pression m aterial. J D ent Res 64(Special Issue):244, abstract no. 620, 1985. 10. R hodes, C .J., an d others. Effect of com m ercial glutaraldehyde so lutions on elastom eric im pression m aterials. J D ent Res 64(Special issue):243, abstract no. 619, 1985. 11. M erchant, V.A., an d others. Prelim inary inves tigatio n of a m ethod for disinfection of dental im pres sions. J Prosthet Dent 52(6):877-879, 1984. 12. H errera, S.P., an d M erchant, V.A. D im ensional stability of dental im pressions after im m ersion disin fection. JADA 113(3 ):419-422, 1986. 13. Jo h n so n , G .H ., an d C raig, R.C. Accuracy of
Dentistry on Stamps new stam p h o n o rin g dentistry has been issued by India on the occasion of the 13th A sian-Pacific D ental Congress held in New Delhi from Jan 28 to Feb 1, 1988. In addition, a first-day cover and a special cancellation were made available. T h e A sian-Pacific Congress is a part of the Federation D entaire In tern atio n ale. In 1954, d u rin g the E ig h th India D ental Association m eeting, Professor M atsumiya suggested a jo in t conference of the Asian countries. T h e first conference of the A sian-Pacific D ental Federation took place in T okyo in 1955. T h e Federation has continued to meet at 3-year intervals in various Asian countries since 1955. T he members of the Federation include: A ustralia, Burma, G uam , H o n g Kong, In d ia, In d o n esia, Ja p a n , Korea, M alaysia, New Z ealand, P ak istan , P h ilip p in es, Singapore, and T h ailan d . A pproxim ately 3,000 persons attended the 13th Congress; its slogan was, “ H ealthy teeth m ean a healthy body.” T h e m ajor topics discussed were esthetic dentistry and public health dentistry in developing countries. T here were 40 scientific sessions on the congress program w ith three sim ultaneous sessions. Preconference courses on porcelain and partial dentures were also scheduled. A trade fair w ith more than 75 participants from around the w orld was held in conjunction w ith the congress. T h e 400-paise stam p shows a sm iling ru ral youth. T h e design was prepared by Shri M. D. Sharm a. T h e m ulticolor stam p was produced by photogravure an d was printed by the India Security Press. Overall size is 3.91 x 2.90 cm w ith p rin tin g size of 3.55 x 2.54 cm and perforation is 13 x 13. T he first-day cover shows a dentist at work w ith m odern equipm ent. T h e cancellation shows the logo of the India Dental A ssociation. We than k Dr. A shw in V. Patel of Vadodara, India, for bringing to ou r attention this new addition to dentistry on stamps. H annelore T. Loevy, CD, PhD A letha Kowitz, MA
530 ■ J A D A , V o l. 116, A p r i l 1988
four types of rubber im pression m aterials com pared w ith tim e of p o u r an d a repeat p o u r of models. J Prosthet D ent 53(4):484-490, 1985. 14. W iner, B.J. Statistical p rinciples in experim en tal design, ed 2. New York, M cG raw -H ill Book Co, 1971, p p 26-37, 149-196. 15. Siegel, S. N onparam etric statistics for the be havioral sciences. New York, M cG raw -H ill Book Co, 1956, p p 184-194. 16. H ellie, C.M ., and others. Q u an titativ e evalua tion of p ro x im al to oth m ovem ent effected by w edg ing: a p ilo t study. J P rosthet D ent 53(3):335-341, 1985. 17. C raig, R.G . A review of properties of rubber im pression m aterials. J M ich D ent Assoc 59(4):254261, 1977. 18. Stackhouse, J.A. T h e accuracy of stone dies m ade from ru b b er im pression m aterials. J Prosthet D ent 24(4):377-386, 1970. 19. Stackhouse, J.A. A com parison of elastic im pression m aterials. J Prosthet D ent 34(3):305-313, 1975. 20. Jo h n so n , G .H ., an d D rennon, D .G . C linical evaluation of detail reproduction of elastom eric im pression m aterials. J D ent Res 66(Special Issue):331, abstract no. 1794, 1987. 21. D urr, D.P., an d Novak, E.V. D im ensional sta bility of alg in ate im pressions im m ersed in disinfect in g solutions. J D ent C h ild 54(l):45-48, 1987. 22. B oucher, R .M .G . P o tentiated acid 1,5 pentanedial so lu tio n —a new chem ical sterilizing and disin fecting agent. Am J H o sp P h arm 31(6):546-557, 1974.