Post on 06-Feb-2016
description
transcript
MenuMenu
First pageFirst page
Why the glass? Meltablity
Workability
Rigidity
Chemical resistance
MenuMenu
First pageFirst page
Main characteristics of ZX-27 glass
• Melting temperature: 1560-1600 C
• Pressure strength: 120-150 Mpa/kp/mm2
• Acid resistance: Hydrolitic Class1.
• Alkaline solubility: Hydrolitic Class 2.
MenuMenu
First pageFirst page
Indications
floated own block tooth
place of glass block in raft
amount of fixed raft
• Unilateral status
• Bilateral status
• In combination with implants
• Supporting arching of large splinting bridges
Kennedy 3
Kennedy 2 Kennedy 4Kennedy 1
Kennedy 1Kennedy 2
MenuMenu
First pageFirst page
Principles of ZX-27 Attractive Glass Abutment System
• the most important is to have a firm and pronounced alveolar ridge at the place of future ZX-27 glass abutments,
• unwritten rule: the more proper pillar teeth are ground meszially, the more missing teeth may be replaced distally (i.e. when replacing 5 and 6, it is ideal to grind 3 and 4; 5 will make the pontic and 6 will be the glass abutment),
• glass abutment is always the most distal part of the bridge with shortened dental arch (Kennedy 1, Kennedy 2),
• there must be at least one 1st class pillar among the prepared own teeth; the more 1st class ground pillars, the better the result,
• glass abutment must have his antagonist to renew occlusal relations and denture function
MenuMenu
First pageFirst page
Attractive Glass Abutment System:
Contraindications:• unstable flabby alveolar ridge (5-8 mm side movements),
• insufficient alveolus height and widths with extensive bone
resorption, •very narrow alveolus forming a narrow ridge created partially by submucous tissue,
•insufficiently healed alveolus after extractions,
MenuMenu
First pageFirst page
Cytological smears from the mouth-wash fluid mainly contained superficial, mature cells. In 17 sears of 3 patients with glass abutment amongst the 67 cytological specimen of 9 patients were found a few keratinized but otherwise typical cell beside the large number of non keratinized epithelial elements.
Typical keratinized stratified epithelium was present on the surface of the gum under the glass abutment.
Keratinization corresponded to parakeratosis and hyperkeratosis histologicaly. There were no mitotic figures amongst the epithelial cells, layers of the epithelium presented typical maturation tendency towards the surface.
1
2
3
P a t o l o g y
MenuMenu
First pageFirst page
The applied fixative poorly fixed tissue glycogen, however the cytoplasm of the cells contained abundant glycogen.
The applied fixative poorly fixed tissue glycogen, however the cytoplasm of the cells contained abundant glycogen.
The applied fixative poorly fixed tissue glycogen, however the cytoplasm of the cells contained abundant glycogen also noticed, although the keratinized layer seemed to be thinner compared to those under the glass abutment. .
4
5
6
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
S t a t i c a n a l y s i s
MenuMenu
First pageFirst page
Modeling of vertical direct stress potential incase of glass abutment support. Load:100 N (vertical force)
Modeling of vertical direct stress potential incase non-supported open-ended bridge. Load:100 N (vertical force)
MenuMenu
First pageFirst page
Three dimensional model of glass-abutment support. Load:100 N (vertical force)
Three dimensional model of non-supported bridge. Load:100 N (vertical force)
MenuMenu
First pageFirst page
Model of glass abutment supported bridge force shift in case of 100 N vertical force.
Model of free end bridge force shift in case of 100 N vertical force.
MenuMenu
First pageFirst page
Dr. Gergely István Dr. Gergely István
R a d i o l o g y
MenuMenu
First pageFirst page
Bone structure beneath the glass abutment.
Position of the glass abutment within the mandible.
MenuMenu
First pageFirst page
Condition of the bone structure at time of the first investigation, 1 year after oral implantation.
Condition of the bone structure at time of the first investigation, 1 year after oral implantation.
MenuMenu
First pageFirst page
Value of mandible‘s calcium content immediately in front of the glass abutment on the left, at time of the second investigation, 4 years after oral implantation.
Value of mandible‘s calcium content under the glass abutment on the left, at time of the second investigation, 4 years after oral implantation.
MenuMenu
First pageFirst page
Value of the mandible‘s calcium content in front of the glass abutment on the right, at time of the second investigation, 4 years after oral implantation.
Value of the mandible’s calcium content under the glass abutment on the right, at time of the second investigation, 4 years after oral implantation.
MenuMenu
First pageFirst page
Description of the employed ZX-27 Attractive Glass Abutment System
Description of the employed ZX-27 Attractive Glass Abutment System
MenuMenu
First pageFirst page
Glass abutment can be purchased in two different sizes „S“ and „L“ in six or twelve pieces of shipment.
Selection of status corresponding glass sizes and insertion into the clamping apparatus
MenuMenu
First pageFirst page
Heating of the glass abutment until it be red and its outlines begin to deform.
Heated and melted glass abutment is pressed by continuously increasing 0,8 N force into the marked place. We wait until it is solidified then put into ceramic coooling coverlet.
MenuMenu
First pageFirst page
Polishing of the glass with the help of diamond processing equipment.
Saddle-like accurate adjustment of the glass abutment to the plaster cast. .
MenuMenu
First pageFirst page
Formation of wax cap on the glass abutment with wax immersion.
Fixation of the glass abutment onto the model with hot cervical wax.
MenuMenu
First pageFirst page
Prepared glass abutment works on the cast.
The prepared work and the glass abutment on the cast before sticking.
Cementation
MenuMenu
First pageFirst page
PRACTICAL PRACTICAL SAMPLESSAMPLES
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
MenuMenu
First pageFirst page
Patient No. 1
MenuMenu
First pageFirst page
Patient No. 1
MenuMenu
First pageFirst page
Patient No. 1
MenuMenu
First pageFirst page
Patient No. 1
MenuMenu
First pageFirst page
Patient No. 1
MenuMenu
First pageFirst page
Patient No. 1
MenuMenu
First pageFirst page
Patient No. 1
MenuMenu
First pageFirst page
Patient No. 1
MenuMenu
First pageFirst page
Patient No. 2
MenuMenu
First pageFirst page
Patient No. 2
MenuMenu
First pageFirst page
Patient No. 2
MenuMenu
First pageFirst page
Patient No. 2
MenuMenu
First pageFirst page
Patient No. 2
MenuMenu
First pageFirst page
Patient No. 2
MenuMenu
First pageFirst page
Patient No. 3
MenuMenu
First pageFirst page
Patient No. 3
MenuMenu
First pageFirst page
Patient No. 3
MenuMenu
First pageFirst page
Patient No. 3
MenuMenu
First pageFirst page
Patient No. 3
MenuMenu
First pageFirst page
Patient No. 4
MenuMenu
First pageFirst page
Patient No. 4
MenuMenu
First pageFirst page
Patient No. 4
MenuMenu
First pageFirst page
Patient No. 4
MenuMenu
First pageFirst page
Patient No. 4