Stefan P. Bienz

ORCID: 0000-0002-8562-1580
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About
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Research Areas
  • Dental Implant Techniques and Outcomes
  • Periodontal Regeneration and Treatments
  • Dental materials and restorations
  • Orthodontics and Dentofacial Orthopedics
  • Bone Tissue Engineering Materials
  • Dental Radiography and Imaging
  • Reconstructive Surgery and Microvascular Techniques
  • Cleft Lip and Palate Research
  • dental development and anomalies
  • Orthopaedic implants and arthroplasty
  • Surgical Sutures and Adhesives
  • Families in Therapy and Culture
  • Oral and Maxillofacial Pathology
  • Oral and gingival health research
  • 3D Printing in Biomedical Research
  • Shoulder Injury and Treatment
  • Agricultural and Rural Development Research
  • Wound Healing and Treatments
  • Endodontics and Root Canal Treatments

University of Zurich
2016-2025

To evaluate the volumetric changes and peri-implant health at implant sites with without previous soft tissue grafting over a 5-year observation period.In 18 partially edentulous patients, dental implants were placed in esthetic zone (15-25) simultaneous guided bone regeneration, followed by submerged healing. During healing phase, eight patients (test) received subepithelial connective graft, whereas 10 (control) did not receive any augmentation. Subsequently, abutment connection was...

10.1111/clr.13013 article EN Clinical Oral Implants Research 2017-03-29

The aim of this study was to comprehensively assess the literature in terms effect peri-implant mucosal thickness on esthetic outcomes and efficacy soft tissue augmentation procedures increase with autogenous grafts or substitutes.Two systematic reviews (SR) were performed prior consensus meeting following questions. Review 1, focused question: In systemically healthy patients an implant-supported fixed prosthesis, what is influence thin as compared thick mucosa outcomes? 2, question 1:...

10.1111/clr.13955 article EN cc-by-nc Clinical Oral Implants Research 2022-06-01

ABSTRACT Aim To compare the histological structure of biopsies from anterior and posterior regions human palate in order to gain insights into potential differences soft tissue harvesting sites. Methods This comparative study involved 20 participants, each whom four samples palatal mucosa were collected. The histologically processed subsequently analysed. thickness epithelium, lamina propria, length rete pegs measured using a microscope. In addition, parameters such as collagen fibres,...

10.1111/jcpe.14133 article EN Journal Of Clinical Periodontology 2025-01-29

To compare two ridge preservation techniques and spontaneous healing in terms of soft tissue thickness, contour changes, handling months after tooth extraction.Thirty-six patients were included with buccal bone plate dehiscences up to 50% single-tooth extraction the esthetic zone. They randomly assigned receive one three procedures: a deproteinized bovine mineral 10% collagen (DBBM-C) covered matrix (DBBM-C/CM), DBBM-C alone, or (SH). Two later, status was assessed, thickness mucosa measured...

10.1111/clr.13594 article EN Clinical Oral Implants Research 2020-03-04

To test whether or not the use of a xenogeneic block loaded with recombinant human bone morphogenetic protein-2 (rhBMP-2) results in different quantity and quality compared to an autogenous block.Twenty-four patients insufficient volume for implant placement were randomly assigned two treatment modalities: rhBMP-2 (test) (control). The horizontal ridge width was evaluated prior augmentation, after augmentation at 4 months. Patient-reported outcome measures (PROMs) assessed suture removal...

10.1111/jcpe.12841 article EN Journal Of Clinical Periodontology 2017-11-18

Abstract Objective To evaluate volumetric changes of soft tissues at pontic sites in patients treated with or without tissue grafting over an observation period 10 years. Materials and Methods A total 17 receiving a tooth‐borne fixed dental prosthesis ( FDP ) were enrolled this study. Nine received subepithelial connective graft (SCTG) the site (test). Eight continued (control). Baseline impressions taken after delivery final Casts scanned digital images superimposed for linear measurements:...

10.1111/jcpe.12651 article EN Journal Of Clinical Periodontology 2016-11-17

Abstract Objectives To analyse the soft tissue morphology under healthy and experimental mucositis conditions comparing zirconia titanium implants. Methods Forty‐two patients with two adjacent missing teeth received one (Zr) (Ti) implant, mesial distal position randomized. At 3 months, half of were instructed to continue (healthy; h) other omit (experimental mucositis; m) oral hygiene around implants for weeks. Clinical parameters evaluated before after phase, a biopsy was harvested. Mixed...

10.1111/jcpe.13411 article EN Journal Of Clinical Periodontology 2020-12-05

Abstract Aim The aim was to evaluate the performance of implants placed with simultaneous guided bone regeneration (GBR) using resorbable or nonresorbable membranes compared in pristine without after an observation period 22–24 years. Material and Methods patient cohort this clinical trial treated from 1994 1996. Dehiscence defects were GBR by either collagen (BG) ePTFE (GT). Implants served as a control (CT). Clinical parameters, marginal levels, technical outcomes evaluated following...

10.1111/clr.13845 article EN Clinical Oral Implants Research 2021-09-20

Abstract Objectives To test whether or not the use of a xenogeneic block loaded with rhBMP‐2 results in superior radiological and profilometric outcomes compared to an autogenous bone block. Materials methods Twenty‐four patients randomly received (test) (control) for primary augmentation. The ridge width (RW) was evaluated by means CBCT scan after augmentation surgery at 4 months, prior implant placement. Surface scans were taken months analyses. Data analyzed Wilcoxon‐signed rank test,...

10.1111/clr.13492 article EN Clinical Oral Implants Research 2019-06-07

Abstract Objectives The aim of the study was to test whether or not use a polyethylene glycol (PEG) hydrogel with without addition an arginylglycylaspartic acid (RGD) sequence applied as matrix in combination hydroxyapatite/tricalciumphosphate (HA/TCP) results similar peri‐implant bone regeneration traditional guided procedures. Material and methods In 12 beagle dogs, implant placement were performed 2 months after tooth extraction maxilla. Two standardized box‐shaped defects bilaterally...

10.1111/clr.12877 article EN Clinical Oral Implants Research 2016-05-20

To evaluate the volumetric changes and peri-implant health at implant sites with without previous soft tissue grafting over a 12-year observation period.Eighteen patients received dental implants simultaneously guided bone regeneration in esthetic zone (15-25) for rehabilitation. Three months following placement, 8 (test) an additional subepithelial connective graft, whereas 10 (control) did not receive any treatment. One week after prothesis delivery 5 12 years follow-up examination,...

10.1111/clr.14058 article EN cc-by-nc Clinical Oral Implants Research 2023-03-05

To assess the clinical, radiographic and patient-reported outcomes (PROMs) of posterior zirconia titanium implants at 1 year implant loading.

10.1111/clr.14329 article EN cc-by-nc-nd Clinical Oral Implants Research 2024-07-26

Abstract Aim The aim of this study was to test whether or not a collagen matrix can improve early wound healing compared spontaneous based on histological and immunohistologic analyses. Methods In 20 volunteers, 6 mm punch biopsies were harvested at the palate. A xenogeneic ( XCM ) sutured in one site; other left untreated (control). Biopsies with diameter 8 subsequently obtained 4, 8, 15 29 days analyses performed. Results At day bed keratinization amounted 12.4 ± 7.5% (control) 18.0 10.2%...

10.1111/jcpe.12624 article EN Journal Of Clinical Periodontology 2016-09-12

Abstract Aim To compare subepithelial connective tissue grafts (SCTG) versus guided bone regeneration (GBR) for the treatment of small peri‐implant dehiscence defects in terms profilometric (primary outcome), clinical, and patient‐reported outcome measures (PROMs). Methods Sixteen patients who presented with buccal dehiscences (≤3 mm) following single implant placement were recruited. Following placement, defect sites randomly treated either a SCTG or GBR. Six lacked after assigned to...

10.1111/clr.14140 article EN cc-by-nc Clinical Oral Implants Research 2023-07-23

Abstract Objectives To assess the early histological, microbiological, radiological, and clinical response to cemented screw‐retained all‐ceramic single‐tooth implant‐supported reconstructions. Materials methods Patients with implants were randomly allocated receive a lithium disilicate crown on customized zirconia abutment (CEM) or directly veneered (SCREW). At screening visit, at insertion 6‐month follow‐up, parameters measured implant contralateral tooth. Marginal bone levels, technical...

10.1111/clr.13366 article EN Clinical Oral Implants Research 2018-09-20

Abstract Objectives This publication reports the EAO Workshop group‐2 discussions and consensus statements which provided scientific evidence on influence of biological parameters implant‐related clinical outcomes. Material methods The first was a systematic review effects abutment material stability peri‐implant marginal bone levels second, critical narrative how diagnostic correspond with long‐term implant survival success. group evaluated content both publications, made corrections...

10.1111/clr.13274 article EN Clinical Oral Implants Research 2018-10-01

To compare the peri-implant soft-tissue dimensional changes following guided bone regeneration between particulate (particle group) and collagenated soft-block-type (block biphasic calcium phosphate (BCP).This study investigated 35 subjects: 18 in particle group 17 block group. Cone-beam computed tomography obtained at 6 months post surgery optical impressions taken periodically (before surgery, 1 year surgery) were superimposed. The ridge contour over time mucosal thicknesses measured...

10.1111/jcpe.13738 article EN Journal Of Clinical Periodontology 2022-11-04

Abstract Aim To assess volumetric and linear changes following ridge preservation ( RP ) or spontaneous healing plus early implant placement with without simultaneous guided bone regeneration GBR ). Materials Methods In eight adult beagle dogs, the mesial roots of mandibular P3, P4 M1 were extracted. Sites randomized to either SH Four weeks later dental implants placed 2) removing non‐integrated DBBM 1). 2 sites, was applied using a demineralized bovine mineral resorbable membrane....

10.1111/jcpe.12860 article EN Journal Of Clinical Periodontology 2017-12-19

Abstract Objectives To test whether or not chemical and/or physical modifications of polyethylene glycol ( PEG ) hydrogels influence degradation time, matrix/membrane stability, and integration into surrounding hard soft tissues. Material methods In 28 rabbits, six treatment modalities were randomly applied to sites on the rabbit skull: a dense network hydrogel HD ), medium‐dense MD modified with an RGD sequence / reduced carboxymethyl cellulose _ LV loose LD collagen membrane BG )....

10.1111/clr.13004 article EN Clinical Oral Implants Research 2017-01-22

To analyze the influence of compression on tissue integration and degradation soft substitutes.Six subcutaneous pouches in twenty-eight rats were prepared boxes made Al2O3 implanted used as carriers for substitutes: a collagen matrix (MG), two volume-stable matrices (FG/MGA), polycaprolactone scaffold(E). The materials (FG/MGA/E) further with twofold (2) fourfold (4) compression, created by stacking additional layers substitute materials. samples retrieved at 1, 2, 12 weeks (10 groups, 3...

10.1007/s00784-022-04726-0 article EN cc-by Clinical Oral Investigations 2022-10-18
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