L-shape technique with Geistlich Bio-Oss Collagen®
BioBrief - Minor Bone Augmentation
The Situation
The patient presented to the clinic with a discolored tooth 11, with mobility and a history of trauma. The tooth has a horizontal fracture in the apical third of the root and has recurrent infection after the root canal treatment. The patient feels discomfort and dislikes his esthetic appearance. He would like the fractured tooth 11 removed and replaced with a fixed solution.
The Approach
To carefully extract tooth 11 and to replace it with an early implant placed with simultaneous guided bone regeneration through the use of Geistlich Bio-Oss® Collagen trimmed in an “L-Shape” under the protection of a Geistlich Bio- Gide®. To augment the peri-implant soft tissue with the use of a connective tissue graft during implant healing time, increasing the overall volume of site 11. To provisionalize the implant for the development of a proper emergence profile. To deliver a definitive reconstruction which is functional and esthetic for the patient
The Outcome
The implant and its prosthetic reconstruction were succesful because they provided the patient with a fixed solution with adequate function and esthetics. The implant shows stable marginal bone levels due to the proper implant placement together with the GBR procedure. The peri-implant soft tissue is healthy and stable with sufficient volume created by the soft-tissue augmentation. The definitive reconstruction meets the patient’s esthetic demands and is functional in occlusion.
Keys to Success
- Careful tooth extraction with minimum damage to the alveolar socket walls
- Proper implant placement, prosthetically driven (with a surgical guide)
- Simultaneous guided bone regeneration with a stable bone substitute (Geistlich Bio-Oss® Collagen) covered by a bilayer collagen membrane (Geistlich Bio-Gide®) that is properly stabilized
- Soft-tissue augmentation with the use of an autogenous connective tissue graft (not shown in the clinical pictures, page 3)
- Development of an adequate emergence profile that mimics a natural tooth
- Fabrication of a ceramic implant reconstruction that blends with the adjacent dentition and is screw-retained (when possible)
About the author
Prof. Dr. Ronald E. Jung – Zurich
He is currently Head Division of Implantology, Clinic for Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine at the University of Zürich. In 2006 he worked as Visiting Associate Professor at the Department of Periodontics at the University of Texas Heath Science Center at San Antonio, USA (Chairman: Prof. Dr. D. Cochran). 2008 he finalized his „Habilitation“ (venia legendi) in dental medicine and was appointed associate professor at the University of Zürich. In 2011 he got his PhD degree from the University of Amsterdam, ACTA dental school, The Netherlands. He is an accomplished and internationally renowned lecturer and researcher, best known for his work in the field of hard and soft-tissue management and his research on new technologies in implant dentistry.
