Über den Autor

Prof. Dr. Suheil M. Boutros

Holly Road 8185
48439 Grand Blanc, MI – USA
+001 (810) 695-6444


Dr. Boutros received his DDS degree from the University of Detroit Mercy and his Master’s degree and specialty certificate in periodontics from the University of Minnesota. He maintains full time private practice limited to periodontics and dental implants in Grand Blanc and Clarkston in Michigan, USA. Dr. Boutros is a Diplomate of the American Board of Periodontology (ABP), the American Board of Oral Implantology (ABOI). He is a Specialist of the Deutschen Gesellschaft für Zahnärzliche Implantologie (DGZI).

Dr. Boutros is a Fellow the Academy of Osseointegration (AO), the American College of Dentists (ACD), and the International College of Dentists (ICD). He serves on the Dean’s Faculty as a visiting Assistant Professor at the University of Michigan. Dr. Boutros lectures extensively both nationally and internationally on dental implants, periodontal plastic surgery and advanced bone grafting, and is the author of number of professional publications including 4 chapters in textbooks.

Controlled Ridge Splitting (CRS) as an Alternative Technique to Autogenous Block Grafting



Alveolar bone splitting and immediate implant placement have been proposed for patients with severe atrophy of the maxilla in the horizontal dimension. These case reports describe the technique of Controlled Ridge Splitting (CRS) as an alternative to block grafting. Simultaneously, dental implants were placed within the split ridge, surrounded by the particulate mineralized allograft and covered by a absorbable membrane.

Materials and Methods

Twenty cases were completed using the Controlled Ridge Splitting (CRS) technique with simultaneous implants placement. A total of 65 implants were placed in severely atrophied maxilla. Puros mineralized allograft was used to augment the split ridge along with a resorbable collagen membrane (Fig. 4).


Twelve female and eight male patients, at an average age of 68 years with severely atrophied maxillae, were rehabilitated with implants using the CRS technique. A total of 65 tapered implants were placed. The implant diameters ranged between 3.25 and 5 mm with lengths ranging between 10 and 13 mm.  The implants were restored with fixed prostheses and were followed for at least 10 to 24 months. All implants achieved osseointegration and continue to have successful prostheses.


The CRS could be an effective and predictable technique for horizontal ridge augmentation associated with immediate implant placement. This predictable treatment option could be a good alternative to autogenous/allogenic block grafts is severely atrophic maxillae.