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Journal of Oral Science & Rehabilitation 54 Volume 2 | Issue 4/2016 S u r g i c a l t r e a t m e n t o f p e r i i m p l a n t i t i s Surgical treatment of circumferential and semicircumferential defects due to periimplantitis: A prospective case series cohort study Abstract O b j e c t i v e Differentsurgicaltreatmentstrategiesforperiimplantitisusinggraftma- terial and membranes have been suggested. However, in these, the mi- crobiologicalaspectsoftheperiimplantenvironmentwereunderestimat- ed. The present preliminary study was aimed at analyzing a new clinical approach based on disinfection of the implant connection and of the im- plant surface, as well as the use of only a self-stabilizing graft material in the treatment of circumferential and semicircumferential bony defects resulting from periimplantitis. M a t e r i a l s a n d m e t h o d s Ten consecutive patients were selected for the present study. After re- moval of factors that may potentially have influenced the periimplant pathology, the prosthesis was removed and a full-thickness flap was el- evated to allowaccess to the periimplant defect and the exposed implant surface. Once the defect had been degranulated and the implant surface cleaned, bone powder was used to cover the surface. A resorbable, self- stabilizing material (GUIDOR easy-graft CLASSIC, Sunstar Suisse, Étoy, Switzerland)composedofcalciumphosphateparticlescoatedwithathin layer of PLGAwas used to fill the defect. No membranes were used and the flaps were closed for a submerged healing. Two months thereafter, a newreopeningprocedurewasperformedandthecleanedsuperstructures and crownswere repositioned.The patientswere followed for12 months thereafter and recalled for customized oral hygiene every three months. Radiographicandperiodontalanalysiswereperformedpreoperativelyand everysixmonthspostoperatively.Microbiologicalanalysiswasperformed preoperativelyandatthelastfollow-up.Threetypesofsitesineachpatient were analyzed: (a) the periimplant sulcus of each implant; (b) the gingival sulcioftheneighboringteeth;and(c)theconnection’sinsideandtheabut- ment surface of each implant. The presence of ten common periodontal pathogens was measured. R e s u l t s Theprocedurestudiedwasassociatedwithapronouncedincreaseinmu- cosalrecessionandclinicalattachmentlevelwithstableperiimplantcon- ditions at six and 12 months. Plaque index, bleeding on probing and prob- ing depth values were significantly reduced at six and 12 months. Luigi Canullo,a David Peñarrocha Oltra,b Marco Tallarico,c Amparo Aloy Prosper,b Hilario Chocerb & Maria Peñarrocha Diagob a Independent researcher, Rome, Italy b Department of Stomatology, Faculty of Medicine and Odontology, University of Valencia, Valencia, Spain c Private practice, Rome, Italy; Dentistry Unit, University Hospital of Sassari, Sassari, Italy C o r r e s p o n d i n g a u t h o r : Dr. Luigi Canullo Via Nizza 46 00198 Rome Italy T + 39 347 620 1976 F + 39 06 841 1980 luigicanullo@yahoo.com H o w t o c i t e t h i s a r t i c l e : Canullo L, Peñarrocha Oltra D, Tallarico M, Aloy Prosper A, Chocer H, Peñarrocha Diago M. Surgical treatment of circumferential and semicircumferential defects due to periimplantitis: a prospective case series cohort study. J Oral Science Rehabilitation. 2016 Dec;2(4):54–61. T + 393476201976 F + 39068411980