Benefits of Properly Contoured DenturesBenefits of Properly Contoured Dentures
Improved esthetics for patients with a high Improved esthetics for patients with a high smile line who display significant amounts smile line who display significant amounts of gingiva.of gingiva.
Provides for appropriate support and Provides for appropriate support and contour of the lip and cheek.contour of the lip and cheek.
Improved tolerance and comfortImproved tolerance and comfort
Facilitates stability and control.Facilitates stability and control.
Prevents chronic biting of the lip or cheek.Prevents chronic biting of the lip or cheek.
EstheticsEsthetics
Gingival contours must be reproduced. This is particularly Gingival contours must be reproduced. This is particularly useful in patients with a high smile line who display useful in patients with a high smile line who display significant amounts of gingiva. significant amounts of gingiva.
EstheticsEsthetics
Note that the length of the cuspid and the premolar is similar to the natural state.
Why stipple?Why stipple?a) Esthetics – a) Esthetics – reflection of lightreflection of light
b) Keeps food b) Keeps food particles from traveling particles from traveling up to the periphery of up to the periphery of the denture the denture
EstheticsEsthetics
Esthetics and Food ImpactionEsthetics and Food Impaction
. The interdental The interdental
papilla must be flat papilla must be flat or slightly concave or slightly concave so as provide a more so as provide a more natural appearance natural appearance and to avoid food and to avoid food impaction.impaction.
Lip Contours and EstheticsLip Contours and Esthetics
The thickness of the labial flange impacts The thickness of the labial flange impacts lip contours. This is primarily developed lip contours. This is primarily developed during border molding the impression.during border molding the impression.
Maxillary cuspid eminenceMaxillary cuspid eminence• Purpose: Lip support and contour. Purpose: Lip support and contour. Additional contour raises the lip and the Additional contour raises the lip and the corner of the corner of the mouth.mouth.
Mandibular cuspid eminenceMandibular cuspid eminence• Purpose: Lip support and contourPurpose: Lip support and contour
Proper contours will also minimize biting of the lips and cheeks.Proper contours will also minimize biting of the lips and cheeks.
Proper development of Proper development of the maxillary cuspid the maxillary cuspid eminences helps eminences helps displace the corners of displace the corners of the mouth and the lip the mouth and the lip away from the biting away from the biting zone.zone.
Lip Contours and Lip BitingLip Contours and Lip Biting
Proper development of Proper development of gingival contours gingival contours associated with the associated with the mandibular cuspid and mandibular cuspid and 11stst premolar will help premolar will help displace the corners of displace the corners of the mouth and the the mouth and the lower lip away from the lower lip away from the biting zonebiting zone..
Lip Contours and Lip BitingLip Contours and Lip Biting
Note Note gingival roll and the slight gingival roll and the slight concavityconcavity between gingival roll between gingival roll and periphery of the denture in and periphery of the denture in the posterior region. This the posterior region. This combination helps to displace combination helps to displace the buccal mucosa away from the buccal mucosa away from the biting zone.the biting zone.
Prevention of Cheek BitingPrevention of Cheek Biting
Lingual contour of the mandibular denture should be concave Lingual contour of the mandibular denture should be concave and there should be a slight gingival roll to prevent tongue and there should be a slight gingival roll to prevent tongue biting and to anchor the denture teeth within the acrylic resin.biting and to anchor the denture teeth within the acrylic resin.
Prevention of Tongue BitingPrevention of Tongue Biting
Stability and Control of the Mandibular DentureStability and Control of the Mandibular Denture
This lingual concavity also facilitates stability and control of the This lingual concavity also facilitates stability and control of the denture. During mastication, the tongue is pressed against this denture. During mastication, the tongue is pressed against this concave lingual surface while simultaneously placing the bolus concave lingual surface while simultaneously placing the bolus onto the occlusal table. The action of the buccinator prevents onto the occlusal table. The action of the buccinator prevents the denture from being displaced laterally.the denture from being displaced laterally.
Completion of Waxup and FestooningCompletion of Waxup and Festooning
Palate must be smooth and approximately 1-2 mm thick
This will promote proper speech articulation and This will promote proper speech articulation and reduce the incidence of gagging.reduce the incidence of gagging.
Why?
Final wax-upFinal wax-up No wax on teeth surfacesNo wax on teeth surfaces Wax has been carefully smoothedWax has been carefully smoothed Note the natural anatomic contoursNote the natural anatomic contours Butt joint between wax and teethButt joint between wax and teeth
Completion of Waxup and FestooningCompletion of Waxup and Festooning
Purpose: To enhance retention & maintain the peripheral
seal of the maxillary denture base by compensating for :• Polymerization shrinkage• Minor denture base functional movements
