alexa With Individualized Abutments to Achieve More Success in Implant Therapy | OMICS International
ISSN: 2161-1122
Dentistry

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With Individualized Abutments to Achieve More Success in Implant Therapy

Ali-Reza Ketabi* and Sandra Ketabi

Medical Dentistry, Private Practice, Epplestr. 29a, Stuttgart, Germany

Corresponding Author:
Dr. Ali-Reza Ketabi
Doctor of Medical Dentistry, Private Practice
Epplestrasse 29A, Stuttgart, Germany
Tel: +49 711 – 4400952
Fax: +49 711 – 63 39 69 78
E-mail: [email protected]

Received Date: September 05, 2017; Accepted Date: September 08, 2017; Published Date: September 15, 2017

Citation: Ali-Reza Ketabi, Sandra Ketabi (2017) With Individualized Abutments to Achieve More Success in Implant Therapy. Dentistry 7:i102. doi:10.4172/2161-1122.1000i102

Copyright: © 2017 Ketabi AR, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Abstract

  

Introduction

The use of osseointegrated, dental implants as a complement and extension of the conventional dental treatment spectrum is becoming increasingly important. Several factors are responsible for the success of implant prosthetic treatment: in addition to modern implant surfaces, stable implant-abutment connections [1] as well as optimal peri-implant hard and soft tissue [2], an individual design of the emergence profile is necessary. The design of the transition from the round implant to the tooth-root-like individual profile is achieved usually by the abutment, which must be individually customized as required [3].

Prefabricated abutments have a rotationally symmetrical basic shape and do not correspond to the shape of the natural teeth in the passage area.

Various techniques for producing individual abutments have been described in the literature. The processing of prefabricated abutments from zirconium dioxide or titanium is often problematic because of the considerable reduction in the substance. Overheating of the ceramic leads to jumps in the material, postprocessing is often very time and cost intensive.

With the Atlantis VAD™ (Virtual Abutment Design, DENTSPLY IH GmbH) software, abutments can be individually designed from the ideal shape of the crown. This results in a natural - aesthetic treatment [4,5].

The Procedure

After Clinical and radiological examinations, an Astra Tech Osseospeed Implant (DENTSPLY IH GmbH) was inserted. After a healing period of 2 months a transfer impression was made using an impression coping (Figure 1).

dentistry-Clinical-state

Figure 1: Clinical state2 month after implant placement (occlusal view).

A plaster casted model was produced as usual. Then the emergence profile of the future abutment was defined in the gingival mask made of silicon (Picodent Dental-Produktions Vertriebs GmbH) (Figure 2) and an as accurate as possible Wax-Up was prepared (Figure 3).

dentistry-buccal-view

Figure 2: Die master with individual emergence profile defined in the gingival mask (buccal view).

dentistry-occlusal-view

Figure 3: Die master with Wax-Up (occlusal view).

Now, virtual models of the master model and the Wax-up are manufactured with optical 3D-Scanner. The resulting data set corresponds virtually to the patient's mouth situation.

The technician himself determined the required abutment design, by transcribing the instructions firstly in a special virtual entry form, and sending the data subsequently via internet to the manufacturer. On the basis of these data, an abutment with a patient-specific emergence profile, starting from the ideal shaping of the crown, were developed. The Abutment was fabricated using the Atlantis Virtual Abutment Design-Software.

After the milling process, the finished abutment, made from a solid blank consisting of a titanium alloy of medical grade, was delivered to the technician with a corresponding abutment screw (Figure 4).

dentistry-Titanium-Atlantis

Figure 4: Titanium Atlantis abutment with individual emergence profile.

The abutment was placed on the model (Figure 5), now the superstructure can be produced in the usual way by the dental technician (Figure 6).

dentistry-Die-master

Figure 5: Die master with individual abutment (buccal view).

dentistry-Die-master-crown

Figure 6: Die master with crown (buccal view).

The patient was provided with cemented crown, made of veneered zirconia Ceramill ZI (Amann Girrbach GmbH) (Figures 7-9).

dentistry-Clinical-stateafter

Figure 7: Clinical stateafter placement of abutments (buccal view).

dentistry-stateafter-placement

Figure 8: Clinical stateafter placement of crown (occlusal view).

dentistry-placement-crown

Figure 9: Clinical stateafter placement of crown (buccal view).

Clinical follow-up was performed after 4 weeks, 6 months and thereafter annually. After 20 month neither technical complications such as fractures of the veneering material or abutment fracture or loosening of the abutment nor soft tissue-complication could be observed. The peri-implant soft tissue has optimally adapted to the crown and an increase of the papilla could be observed (Figures 10 and 11).

dentistry-control-examination

Figure 10: Clinical control examination after 20 month (occlusal view).

dentistry-Clinical-control-examination

Figure 11: Clinical control examination after 20 month (buccal view).

No bone changes, on the mesial and distal aspect of the implants could be found during the observation period (Figures 12 and 13).

dentistry-X-ray-control

Figure 12: X-ray control after placement of abutments and crown.

dentistry-X-ray-control

Figure 13: X-ray control after 20 month.

The results of our own clinical studies and other authors show that CAD / CAM-made abutments can simplify and accelerate the prosthetic work processes without sacrificing esthetics and function [6-8]. The method allows the production of individual abutments, starting from the ideal shape of the crown. Thus, the emergence profile can be optimized by the abutment. The marginal course can be adapted to the course of the gingiva and thus remain clinically controllable, as a result of which cement residues can be removed very simply.

Atlantis abutments offer some advantages over the previous methods for the manufacture of individual implant abutments, the application of this method can therefore be recommended.

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