Classification and impression techniques of implants/ dentistry dental implants

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Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.

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

  • Classification and impression techniques of implants

    INDIAN DENTAL ACADEMY

    Leader in continuing dental education

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  • 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

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  • Subperiosteal implants

    Based upon the placement within the tissue

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  • Subdivision of subperiosteal implant

    Unilateral

    Interdental

    Total

    circumferential

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  • Unilateral subperiosteal implant

    Interdental subperiosteal implant

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  • Total subperiosteal implant

    Circumferential subperiosteal implant

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  • Transosteal implant

    Also known as

    Staple bone

    Mandibular staple

    Transmandibular

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  • Transosteal implant

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  • Endosteal implant

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  • Root form

    Blade/plate form

    Ramus frame

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  • Intramucosal inserts

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  • Endodontic stabilizer implant

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  • Based upon materials used

    1.Metallic implants-commercially pure titanium

    Titanium alloy

    Cobalt chromium molybdenum

    alloy

    2.Nonmetallic implants-Ceramics

    Carbon

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  • Ceramic and titanium alloy implants

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  • Based upon the attachment mechanism

    1.Osseointegration

    2.Fibro osseous integration

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  • Based upon their surface coating

    Titanium plasma sprayed

    Hydroxyapatite coating

    Grid blasting with TiO

    SLA(sandblasted-largegrid-acidetched)

    Acid etched

    Machined surface

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  • Based upon the shape

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  • Contd.

    Threaded,nonthreaded

    Tapered,parallel

    With vent holes,without vent holes

    Hollow cylinder,solid screws

    Root form,blade form

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  • Based upon the surgical stage

    Two stage implants

    One stage implant

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  • Based upon mode of insertion

    1.Axially inserted (crestal approach)

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  • 2.Laterally inserted(basal approach)

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  • 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

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  • Components of implant

    Implant body

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  • Cover screw

    Healing abutment

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  • Healing cap

    Implant abutment

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  • Impression posts

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  • Laboratory analogs

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  • IMPRESSION MATERIALS

    Ideal Requirements

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

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  • Materials Used

    Alginate Agar Polysulphide Polyether Condensation Silicone Addition Silicone

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  • ALGINATE

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

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  • AGAR

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

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  • Polysulphide

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

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  • Condensation silicone

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

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  • 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

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  • Polyether

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

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  • Dispensed as :

    Manual mixing

    Automixing system

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  • Manual mixing

    Putty Heavy body Monophase Light body

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  • Automixing equipment & materials

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  • Two basic impression techniques for implants are

    1. indirect technique or closed tray technique

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

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  • Indirect impression technique

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  • Contd

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  • Direct impression technique

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  • Indirect method

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  • Direct method

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  • 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