1 With Reza EFTEKHAR ASHTIANI BS DMD MS day implant lecture

IMPRESSION in IMPLANT DENTISTRY REZA E . ASHTIANI BS,DMD,MS SBMU ,DENTAL SCHOOL WWW.DANDANHA.COM WWW.FB.COM/DENTISTRY .DONTTEACH

Educational goals

Impression making in implant understand the importance Name the goals Recognize the difference between implant impressing with natural teeth List the different technique Identify the impression component comprehend the differences of technique Count the indication of each technique make use of the methods

Passive fit frame work and no stress applied to the fixture from superstructure Accurately relate the hex position of fixture/abutment to the other structures in the dental arch Goal of impression

Implant/teeth impression Natural teeth implant Hand made preparation Transfer of surface detail Transfer the position of teeth Retraction of gingiva is possible Precise machine part Only need to transfer the hex situation

Impression Technique in implant Fixture level impression technique Indirect (CLOSE TRAY) or (TRANSFER) Direct ( OPEN TRAY) or (PICK UP) Splinted Non splinted Indexing Abutment level impression technique Without modification Direct Indirect With modification

COMPONENET FOR IMPRESSION IMPRESSION COPING/ ANALOUGE

Pick up / transfer technique Direct Indirect

indirect technique

DIRECT technique / splinted

Direct technique/ Splinted

Pick up technique/ NON Splinted

Pick up technique/ Non Splinted

PICK UP versus TRANSFER Accuracy There is no universal answer have been found For 3 or fewer implant no difference is shown between the technique In deep sub gingival situation the extension of impression coping had effect in accuracy LEE,H . ERCOLI,C 2008UNIVERSITY OF ROCHESTER Mahshid ,m .eftekhar ashtiani,r 2007 SBMU

Indexing in dental implant Customized healing cap / immediate loading/ Indexing in dental implant

Indexing Technique

TIP Insure seating of the impression coping Tactile sense Radiograph Notice to the requirement of material of choice (poly ether, PVS,…) Errors are more obvious in implant (precise machine fit of component)

Impression material selection Silicone Polyether In pickup technique : More rigid material In transfer technique: Elastic material with good recovery

Abutment level impression Without modification of abutment (SCREW TYPE RESTORATION) Direct ( Pick up) Splinted Non splinted Indirect( Transfer) (CEMENT TYPE RESTORATION) With modification of abutment

Abutment level impression Without modification PICK UP TECHNIQUE SCREW TYPE RESTORATION Abutment level impression Without modification PICK UP TECHNIQUE

Abutment level impression Without modification CEMENT TYPE RESTORATION Abutment level impression Without modification

Step-by-Step Procedure

Step-by-Step Procedure

SPI® EASY Temporary caps

abutment level impression With modification CEMENT TYPE RESTORATION abutment level impression With modification

abutment level impression With modification Look Like teeth impression Need to transfer of surface detail Gingival retraction must be considered

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