SRM University Journal of Dental Sciences Volume 1 - Issue 1 - June 2010
Review
Historical interest of denture base materials
Dr.M.Vasantha Kumar*, Dr.Swati Bhagath**, Dr.J.Brintha Jei***
* Principal and HOD **Reader, ***Senior Lecturer,
Department Of Prosthodontics, SRM Dental College , Chennai
Address for correspondence: ABSTRACT
Dr. J Brintha Jei, MDS Complete and partial dentures, as we think of them today, were not
Senior Lecturer, definitely recorded until fairly recent times. About the Seventeenth
Dept of Prosthodontics
Century, complete and partial dentures emerged in recognized form
SRM Dental College,
Ramapuram, and from the time of Fauchard, in the early Eighteenth Century this
Chennai. branch of prosthetic dentistry has shared in the remarkable progress
Email : brinthajei@yahoo.co.in that has been characteristic of the modern era. The study of dental
history indicates repeatedly the indebtedness of each age to its
immediate and remote predecessors. Now here has this been more
strikingly revealed than in the field of prosthetic dentistry, dependent
as it has been upon material and mechanical development and
invention.
KEY WORDS : Box wood denture, Ivory Denture ,Vulcanized
rubber
INTRODUCTION relatively inexpensive and would be carved to desired shapes
denture bases fabricated from wood often warped and
Early prostheses were fashioned by carving denture cracked in presence of moisture further more posed esthetic
bases from naturally occuring materials, such as wood, bone and hygienic challenges and was subject to degradation
and ivory the introduction and development of casting and during prolonged periods in the oral environment.
forging procedures established metal and metal alloys as
viable denture base materials. Subsequently, porcelain was Like wood, bone8 was chosen due to its availability,
used in the fabrication of denture bases despite these reasonable cost and carvability. It is reposted that Fauchard
advances, additional improvements in the physical and fabricated dentures by measuring individual arches with a
esthetic properties of denture base materials were sought. compass and cutting bone to fit these arches. Esthetics and
The selection of specific materials traditionally has been hygiene were the main concern.
based on availability, cost, physical properties, esthetic
qualities and handling characteristics. Ivory8 was also used as denture base material.
Denture bases and prosthetic teeth were fashioned by carving
REVIEW these materials to designed shapes. They were relatively
stable in oral environments further more Ivory bases offered
During the middle of nineteenth century, Vulcanized significant esthetic and hygienic advantages in comparison
rubber (vulcanite)1-3 was introduced as a denture base with denture bases carved from wood and bone.
material. This marked the introduction of polymers in
complete denture prosthetics. Vulcanized rubber eventually During the later stages of eighteenth century, Dechemont and
was displaced by another polymer, poly (methyl / Duchate introduced porcelain as a denture base material
methacrylate)4-6 (PMMA) PMMA displayed significant secrets of fabrication of process remained will guarded and
improvements in physical, esthetic and handling properties. porcelain denture bases were relatively expensive. During
subsequent years, the secrets of dental porcelain became
During subsequent years, Polysterene polyvinyl acrylic and disseminated more widely. As a result the cost associated
polyamides7 were used in the fabrication of denture bases. A with porcelain denture bases decreased and use of ceramic
light activated urethane dimethacrylate also was introduced denture bases became more common. Main drawback
for denture base applications. None of these materials associated with ceramic was brittleness.
provided the unique combination of physical and esthetic
properties exhibited by PMMA. As a result, PMMA has Metals and metal alloys9 have been used in
dominated the denture base arena for more than 50 years. construction of dental prosthesis for centuries gold, silver,
aluminium and base metal alloys have been used in
For years denture bases were fabricated from wood8. Wood fabrication of bases for complete dentures. Traditionally gold
was chosen because it was available readily, relatively alloys10,11 have been the most popular materials for the
103
Historical interest of denture base materials Vasanthakumar et al
Fig1. 4 :Silver denture base with porcelain teeth
Fig-1.1 : Box wood denture
Fig1.5 : Partial denture with silver base and porcelain teeth
Aluminium alloys15,16 have been used in fabrication of
complete denture bases like gold, aluminium denture bases
Fig-1.2 : Three pieces of shell in place of natural lower are well tolerated by patients and do not corrode in the oral
incisors (600 A.D) environment and potential relationship between aluminium
and alzheimers diseases has been reported.
Currently base metal alloys are commonly used. These are
relatively strong and may be cast rather accurately. The most
promising metal for potential denture base applications
appears to be commercially pure titanium. This metal is
inexpensive light weight strong and displays excellent
biocompatibility.
Since the later half of the nineteenth century, polymers have
dominated the denture fabrication process. Vulcanized
rubber, polystyrene poly (viny acrylics), polyamides and
polymethyl methacylate have been used in denture base
fabrication.
Fig1.3 :Ivory Denture Vulcanized rubber or vulcanite17-19 was introduced as denture
base material in 1855. Vulcanite displayed, questionable,
esthetics and the fabrication process was particularly
fabrication of metal denture bases. They are well tolerated by
demanding.
patients and do not corrode in oral environment. In addition
the increased weight provided by such alloys may be
During subsequent years, the dental profession sought
advantages in mandibular complete denture appliances the
suitable substitutes for vulcanite. In 1937 polymethyl
principal draw back of these alloys is related to high cost.
methacrylate20-27 was introduced and rapidly replaced
vulcanite as the most commonly used denture base material.
Denture bases also have been fabricated using Silver12-14 and
its alloys unlike gold alloys, silver has its alloy exhibit Polymethyl methacrylate28-34 provided enhanced physical and
significant corrosion in the oral environment consequently properties readily available, inexpensive and easily
the use of silver and its alloys is contra indicated for extra oral manipulated.
application.
104
Historical interest of denture base materials Vasanthakumar et al
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