Classification and impression techniques of implants/ dentistry dental implants

Classification and impression techniques of implants

INDIAN DENTAL ACADEMY

Leader in continuing dental education

www.indiandentalacademy.com



Classification
Based upon
Placement within the tissues

Materials used

Attachment mechanism

Surface coating

Shape

Surgical stage

Mode of insertion

Tissue response & systemic toxicity effects of implants



Subperiosteal implants
Based upon the placement within the tissue



Subdivision of subperiosteal implant

Unilateral

Interdental

Total

circumferential



Unilateral subperiosteal implant

Interdental subperiosteal implant



Total subperiosteal implant

Circumferential subperiosteal implant



Transosteal implant

Also known as

Staple bone

Mandibular staple

Transmandibular



Transosteal implant



Endosteal implant



Root form

Blade/plate form

Ramus frame



Intramucosal inserts



Endodontic stabilizer implant



Based upon materials used

1.Metallic implants-commercially pure titanium

Titanium alloy

Cobalt chromium molybdenum

alloy

2.Nonmetallic implants-Ceramics

Carbon



Ceramic and titanium alloy implants



Based upon the attachment mechanism

1.Osseointegration

2.Fibro osseous integration



Based upon their surface coating

Titanium plasma sprayed

Hydroxyapatite coating

Grid blasting with TiO

SLA(sandblasted-largegrid-acidetched)

Acid etched

Machined surface



Based upon the shape



Contd.

Threaded,nonthreaded

Tapered,parallel

With vent holes,without vent holes

Hollow cylinder,solid screws

Root form,blade form



Based upon the surgical stage

Two stage implants

One stage implant



Based upon mode of insertion

1.Axially inserted (crestal approach)



2.Laterally inserted(basal approach)



Based upon tissue response &systemic toxicity effects of implants

Biotolerant materials-polmethylmethacrylate

Bioinert materials-titanium and aluminium oxide

Bioactive materials-glass and calcium phosphate ceramic



Components of implant

Implant body



Cover screw

Healing abutment



Healing cap

Implant abutment



Impression posts



Laboratory analogs



IMPRESSION MATERIALS

Ideal Requirements
Complete plasticity before cureFluidity to record fine detailAbility to wet oral tissuesDimensional accuracyDimensional stabilityComplete elasticity after cureOptimal stiffness


Materials Used
Alginate Agar Polysulphide Polyether Condensation Silicone Addition Silicone


ALGINATE
Poor dimensional stability Poor dimensional accuracy Poor tear strength Poor stiffness Interferes with setting of gypsum


AGAR
Interferes with setting of gypsum Dimensional instability Elaborate equipment needed Low tear resistance


Polysulphide
Base-polusulfide polymer, Catalyst- lead dioxide High tear strength Messy,unpleasant odour Long setting time Poor dimensional stability Hydrophobic


Condensation silicone
Cheaper Good tear strength, accuracy & elastic properties Dimensional instability,due to loss of ethyl alcohol Poured quickly


Addition silicone
Shorter setting time Easy to mix- automatic mixing devices Adequate tear strength Extremely high accuracy Dimensional stability even after 1 week Least distortion on removal Hydrophilic Good compatibility with gypsum


Polyether
Good dimensional stability & accuracy Short setting time Material very rigid Not available in all consistencies Most expensive


Dispensed as :

Manual mixing

Automixing system



Manual mixing
Putty Heavy body Monophase Light body


Automixing equipment & materials



Two basic impression techniques for implants are

1. indirect technique or closed tray technique

2.direct or pick-up or open tray technique.



Indirect impression technique



Contd



Direct impression technique



Contd



Indirect method



Direct method



Related articles

Tautin(1985)presented a technique to accurately, transfer and reproduce the relationship between implant dentures , in which no preliminary impression or acrylic resin custom tray were needed. He used modeling compound to form a custom tray by adapting it over transfer copings,pressing the compound over the superior aspect of the coping so that its circular outline is seen through the compound.After trimming the outline of the coping showing through the top of the tray an impression plaster is used to record and transfer the coping to the impressions



Loos(1986)presented a detail technique for the fabrication of a fixed prosthesis supported by implants.His technique incorporated plugging the incisal end of the transfer coping with beading wax(to prevent impression material from flowing into it)splinting the transfer copings with orthodontic ligature wire and Duralay acrylic resin,use of a plastic perforated impression tray with incisal window to access the transfer coping and making the final impression with putty light body addition silicone.



Rasmussen(1987)presented a technique in which the existing denture is modified using tissue conditioning material is used instead of healing caps after second stage surgery ,eliminating the use of impression copings at the final impression.



Humphries et al (1990) evaluated the accuracy of implant master casts constructed from transfer impressions using three techniques.The techniques used were splinted square polymer copings,unsplinted square polymer copings and unsplinted hydrocolloid copings.Tapered hydrocolloid copings were more accurate than the other two methods.



Carr (1991) compared impression techniques for five implant mandibular model by both indirect and direct transfer coping techniques and found that for the models used ,the direct method produced more accurate working casts.



Vigolo et al(2000)evaluated the accuracy in transferring the position of the hexagonal head of a single implant to the working cast, and concluded that the sandblasting and coating the roughened surface of the impression coping with an impression adhesive will result in more accurate orientation of the implant replicas in the laboratory master casts in single tooth implant restorations.



Conclusion

Success with implant prosthodontics requires a careful attention to each and every step from diagnosis and treatment planning. Several implant systems are available , selection of appropriate one is mandatory. The prosthesis fit can be accurate only if a proper impression is made. Thus usage of correct impression technique and material are important.



References

1. contemporary implant dentistry , Carl E. Misch

2. Implants in dentistry , Michael,John and Luis.

3. Implant prosthodontics Stevens & freidrickson

4. Dental implants- Fundamental & advanced laboratory

technology , Robert Winkleman &Kenneth orth.



References contd

5. Philips science of dental materials

6. Contemporary fixed prosthodontics, Rosentiel

7. Principles & practice of implant dentistry, Weiss

8. Theory & practice of ossteointegration, Hobo

9. Carr AB. Int J Oral Maxillofac Implants. 1991;6(4):448-55

10. Assif etal. Int J Oral Maxillofac Implants. 1999;14(6):885-88

11. Loos Larry G. J Prosthet Dent 1986;55:232-42

12. Rasmussen Eric J. J Prosthet Dent. 1987;57:198-203

13. Tautin Francis S. J Prosthet Dent. 1985;54:250-51

14. Vigolo etal. J Proshtet Dent. 2000;83:562-66



Thank you

Thank you

For more details please visit




Classification and impression techniques of implants/ dentistry dental implants

Education

Transcript of Classification and impression techniques of implants/ dentistry dental implants

Affordable Dental Implants and Cosmetic Dentistry

Atlanta Aesthetic dentistry, Atlanta Dental Implants

Splints/ dentistry dental implants

Dental Implants - Dentistry PlusDental Implants Dental implants are often a good option for people with missing teeth. A dental implant (or fixture) is a surgical component that acts

Surgical procedures/ dentistry dental implants

Journal of Dentistry And Oral Implants

The era of dental ceramics/ dentistry dental implants

Product Catalog - Bicon Dental Implants - система ... Implants1 Implants 3 Implant Level Impression Components ...

Beginner Guide to Impression Trays in Dentistry

Straumann Closed Tray Impression Technique for Bone Level Implants

CUSTOMIZED IMPRESSION POST FOR BONE LEVEL IMPLANTS

Special impression techniques/ dentistry dental implants

DENTAL IMPLANTS Patient Information - Dentistry Plusdentistryplus.com.au/wp-content/uploads/2015/10/Implants-Brochure.… · DENTAL IMPLANTS Patient Information ... changes in facial

Dental Implants at Advanced Cosmetic & Family Dentistry

Posterior Dental Implants Patient Pages Information_files...dental implants and missing teeth Dental implants are the most advanced method we have in dentistry today to replace missing

Dental Implants Toronto | Aesthetic & Cosmetic Dentistry ...

Impression &Impression Materials in Implant Dentistry DR MANSOUR RISMANCHIAN Associated professor,Department of prosthodontics and Implant,Dental school.Isfahan.

Work Smarter, Not Harder: Impression-Making Designed for ......Impression-Making Designed for Dentists June 2018. Solving the Impression Compromise Dentistry is practiced in the real

Cosmetic dentistry with dental implants

68 19 arch 2015 Dentistry Productnes Identium impression material · 2016-02-11 · new hydrophilic impression material Current impression materials Of the various types of impression