PROSTHETIC DENTISTRY
PROSTHETIC RECONSTRUCTIONS AND REFERRING IMPLANT SURVIVAL IN A POSTGRADUATE PROGRAM : A RETROSPECTIVE STUDY
Meret Cécile Gebistorf 1 , 2a , Christina Laura Bader 2b , Takuro Takeichi 3 , 4c , Joannis Katsoulis 2 , 4 , 5d *
1
Department of Orthodontics , School of Dental Medicine , University of Bern , Bern , Switzerland
2
Former Department of Prosthodontics , School of Dental Medicine , University of Bern , Bern , Switzerland
3
Department of Fixed Prosthodontics , School of Dentistry , Aichi Gakuin University , Nagoya , Japan
4
Department of Preventive and Restorative Sciences , University of Pennsylvania School of Dental Medicine , Philadelphia , PA , USA
5
Department of Reconstructive Dentistry and Gerodontology , School of Dental Medicine , University of Bern , Bern , Switzerland a
DMD , Postgraduate Student b
DMD , Postgraduate Student c
DDS , Lecture ( Aichi Gakuin University ), Adjunct associate professor ( University of Pennsylvania ) d
DMD , PhD , MAS , Associate Professor ( University of Bern ), Adjunct Associate Professor ( University of Pennsylvania )
Received : July 12 , 2016 Accepted : July 14 , 2016
Available online : August 19 , 2016
Cite this article : Gebistorf MC , Bader CL , Takeichi T , Katsoulis J . Prosthetic reconstructions and referring implant survival in a postgraduate program : A retrospective study . Stoma Edu J . 2016 ; 3 ( 2 ): 223-234 .
ABSTRACT
Aims : To analyze frequency distribution of prosthetic reconstructions and therapeutic modalities with implant-supported reconstructions ( ISRs ) applied in a university graduate program . Methodology : Data of implant placement and related ISR were obtained from treatment plans , surgical protocols and patients ’ charts , covering the 2005 to 2010 time period . Loading time , implant survival and type of ISR , i . e . fixed ( single crown ( SC ), short-span fixed dental prosthesis ( FDP ), full-arch FDP ( IB )) and removable ISR ( denture with ball attachments ( RDP ), bar-supported overdenture ( Bar-IOD )) were determined and analyzed with descriptive statistical methods . Results : Data of 819 patients with a mean age of 62.3 ± 11.6 years were available . Graduate students placed 2337 implants and 1133 related ISRs were fabricated . The observation time ranged from 1 to 8 years ( mean 4.7 ± 1.8 ). The number of implants supporting fixed and removable ISRs was 1053 ( 45.1 %) and 1284 ( 54.9 %), respectively . The percentage distribution of implants per ISRs exhibited 337 / 337 SCs ( 14.4 %), 422 / 190 FDPs ( 18.1 %), 294 / 54 IBs ( 12.6 %), 374 / 198 RDPs ( 16.0 %) and 910 / 354 Bar-IODs ( 38.9 %). Thirty-one implants were lost ( 12 before and 19 after loading ) resulting in an 8-year cumulative survival rate of 98.6 % without difference between implants of different groups ( fixed vs . removable ISRs , splinted vs . non-splinted ISRs , no GBR / SFE vs . GBR / SFE , upper vs . lower jaw ). Conclusions : A broad variety of fixed and removable implant supported prostheses for partially and completely edentulous patients was identified . Although these data represent learning curves for graduate students working under supervision , implant survival was successful in a short-term range . Keywords : implant-dentistry , graduate training , implant survival , prosthetic reconstructions , CAD / CAM .
1 . Introduction Implant dentistry has become an integral part of clinical practice . Already in the early nineties when basic research in osseointegration and clinical application of implants grew rapidly , clinicians and university educators discussed the teaching of implantology for undergraduate students and for postgraduate trainings 1 . At this time the lack of trained and qualified teachers appeared to be a limitation when implantology should be introduced in university curricula 2 . However , gradually implant restorations were included into general and specialist dental practice 3 . Nevertheless , the topic of undergraduate training was taken up again only after the year 2000 and is currently being discussed worldwide . Surveys and reviews that gathered data from dental schools in Northern America and less frequently in Europe revealed that implant dentistry has been incorporated to a high percentage into the undergraduate training 4-11 . Teaching implant dentistry often focused on the surgical aspects
* Corresponding author :
Prof . Dr . Joannis Katsoulis , DMD , PhD , MAS Department of Reconstructive Dentistry and Gerodontology , School of Dental Medicine , University of Bern , Freiburgstrasse 7 , CH-3010 Bern , Switzerland Tel : + 41.31.632.25.86 , Fax : + 41.31.632.49.33 , e-mail : joannis . katsoulis @ zmk . unibe . ch
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