* John P. Frush & Ronald D.
Fisher
INTRODUCTION
Dentogenics is the art, practice and technique of creating the illusion of
natural teeth in artificial dentures and is based on the elementary factors of
Sex,Personality and Age(SPA Factors).
The dentogenic restoration is designed to enhance the naturalness of appearance in the indivisual for whom it is made by its complementary contribution to beautify, charm, character, or dignity observed in a fully expressive smile or in earnest conversation. The dentogenic concept, when applied, provides a more natural, harmonious prosthesis, which not only is desired by the patient, but also is the quality of care they deserve. Dentogenics can be considered as an esthetic option over the conventional denture appearance rather than a compulsion. This concept can be an ideal choice for single complete dentures. Dentogenics renders dentures with closest resemblance to the natural dentition for patients who do not want the typical denture appearance, rather prefer one similar to their earlier profile or one matching their age, gender and personality.
THE SEX FACTOR IN DENTOGENICS
Introduction :
A women is a woman from her finger tips to her smile and a man from his fists to his smiles. Feminine Characteristics:
A glance at the schematic feminine form is sufficient to illustrate the roundness, smoothness and softness that is typical of women.
Curve suggests softness and thus feminity.
Masculine Characteristics: The masculine form illustrates the cuboidal, hard, muscular, vigorous appearance.
Muscularity expresses aggressiveness, boldness, hardness, strength, sharpness and
forcefulness.
( This positioning of the lateral incisors imparts a quality of feminine softness.)
(A hardened smile for the vigorous male can be achieved by rotating the lateral incisors mesially.)
Reference: Frush, John P.,andFisher,RonaldD.:How Dentogenic restoration Interprets the Sex Factor, J.Pros.Dent, 160 - 172, March 1956
The Personality Factor In Dentogenics
Introduction:
In the case of normal social activity, the smile is the primary objective for personalities of a human being. Interpretation of Personality factor depends on our manipulation of tooth shapes (molds) ,tooth colors, tooth position, and the matrix (visible denture base).
Characteristics
Delicate type: Meaning fragile,frail, the opposite of robust. Medium type: Meaning normal, moderately robust, healthy and of intelligent
appearance.
The vigorous type: Meaning the opposite of delicate, hard and aggressive in
appearance, the extreme male animal.Most vigorous patients are men and most delicate patients are women.
Reference: Frush, John P.,andFisher,RonaldD.:How Dentogenics Interprets the Personality Factor, J.Pros.Dent, 441- 449, July 1956
The Age Factor In Dentogenics
Introduction:
"Age is the most terrible misfortune that can happen to any man other evils will
mend, this is everyday getting worse".
In each individual, age changes take place through the entire body, and the teeth
are no exception.
Characteristics: Middle Age:
Shows mamelon on the incisal edges of the permanent incisors. The unbraided bluish incisal edge and unworn depth of incisal enamel.
Old Age: Gingival recession , attrition , abrasion , erosion , spacing is seen
Dotted line shows the original appearance of the incisal edges of artificial teeth; solid line shows The incisal wear to be incorporated
The changing cuspid tip with age. Left youth; Center, middle age; right, advanced age.
Reference: Frush, John P.,andFisher,RonaldD.:How Dentogenic restoration Interprets the Age Factor, J.Pros.Dent, 5- 13, January 1957
