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List of works by Ralf J Kohal

A Prospective Clinical Cohort Investigation on Zirconia Implants: 5-Year Results

scientific article published on 10 August 2020

A systematic review of the influence of different titanium surfaces on proliferation, differentiation and protein synthesis of osteoblast-like MG63 cells.

scientific article

A zirconia implant-crown system: a case report.

scientific article published in April 2004

All-Ceramic Single Crown Restauration of Zirconia Oral Implants and Its Influence on Fracture Resistance: An Investigation in the Artificial Mouth.

scientific article published on April 2015

All-ceramic single crowns supported by zirconia implants: 5-year results of a prospective multicenter study

scientific article published on 23 April 2019

All-ceramic, bi-layered crowns supported by zirconia implants: Three-year results of a prospective multicenter study.

scientific article published on 19 September 2017

Alumina reinforced zirconia implants: 1-year results from a prospective cohort investigation.

scientific article published on 11 February 2015

Alumina reinforced zirconia implants: effects of cyclic loading and abutment modification on fracture resistance.

scientific article published on 9 January 2015

Alumina-reinforced zirconia implants: survival rate and fracture strength in a masticatory simulation trial.

scientific article published on December 2010

Bi-layered zirconia/fluor-apatite bridges supported by ceramic dental implants: a prospective case series after thirty months of observation.

scientific article published on 23 November 2015

Biofilm formation and composition on different implant materials in vivo

scientific article

Biomechanical and histological behavior of zirconia implants: an experiment in the rat

scientific article published on 01 April 2009

CAD/CAM-fabricated ceramic implant-supported single crowns made from lithium disilicate: Final results of a 5-year prospective cohort study

scientific article published on 13 June 2017

CAD/CAM-fabricated implant-supported restorations: a systematic review

scientific article published on 7 June 2015

Cellular transcriptional response to zirconia-based implant materials

scientific article published on 10 January 2017

Ceramic abutments and ceramic oral implants. An update.

scientific article published on January 2008

Changes in peri-implant tissues subjected to orthodontic forces and ligature breakdown in monkeys.

scientific article

Clinical Outcomes of Zirconia Dental Implants: A Systematic Review

scientific article

Clinical and Patient-reported Outcomes of a Zirconia Oral Implant: Three-year Results of a Prospective Cohort Investigation.

scientific article published on 31 July 2015

Clinical and histologic evaluation of submerged and nonsubmerged hydroxyapatite-coated implants: a preliminary study in dogs

scientific article published on 01 November 1999

Clinical and patient-reported outcomes of zirconia-based implant fixed dental prostheses: Results of a prospective case series 5 years after implant placement

scientific article

Clinical and radiological evaluation of a template-guided (NobelGuide™) treatment concept.

scientific article published on 18 September 2012

Clinical outcomes of partial and full-arch all-ceramic implant-supported fixed dental prostheses. A systematic review and meta-analysis

scientific article published on 01 October 2018

Comparison of bioabsorbable and bioinert membranes for guided bone regeneration around non-submerged implants. An experimental study in the mongrel dog

scientific article published on 01 June 1999

Contemporary Digital Restorative and Minimal-Invasive Preservative Surgical Techniques in the Esthetic Zone: A Case Report.

scientific article published on 21 December 2017

Differences in morphogenesis of 3D cultured primary human osteoblasts under static and microfluidic growth conditions

scientific article published on 15 January 2014

Digital technologies to support planning, treatment, and fabrication processes and outcome assessments in implant dentistry. Summary and consensus statements. The 4th EAO consensus conference 2015.

scientific article published on September 2015

Does Oral Implant Design Affect Marginal Bone Loss? Results of a Parallel-Group Randomized Controlled Equivalence Trial.

scientific article published on 31 January 2018

Effect of different crown contours on periodontal health in dogs. Clinical results

scientific article published on 01 August 2003

Effect of different crown contours on periodontal health in dogs. Microbiological results.

scientific article published in February 2004

Effect of two different healing times on the mineralization of newly formed bone using a bovine bone substitute in sinus floor augmentation: a randomized, controlled, clinical and histological investigation

scientific article published on 5 October 2015

Evaluation of Guided Bone Regeneration around Oral Implants over Different Healing Times Using Two Different Bovine Bone Materials: A Randomized, Controlled Clinical and Histological Investigation.

scientific article published on 20 February 2014

Evaluation of Zirconia-Based All-Ceramic Single Crowns and Fixed Dental Prosthesis on Zirconia Implants: 5-Year Results of a Prospective Cohort Study

scientific article published on 07 February 2014

Evaluation of a new bioresorbable barrier to facilitate guided bone regeneration around exposed implant threads. An experimental study in the monkey.

scientific article

Evaluation of a one-piece ceramic implant used for single-tooth replacement and three-unit fixed partial dentures: a prospective cohort clinical trial

scientific article published on 27 July 2015

Evaluation of alumina toughened zirconia implants with a sintered, moderately rough surface: An experiment in the rat.

scientific article published on 24 November 2015

Evaluation of osteogenic cell culture and osteogenic/peripheral blood mononuclear human cell co-culture on modified titanium surfaces

scientific article published on 26 March 2013

Evaluation of zirconia-based posterior single crowns supported by zirconia implants: preliminary results of a prospective multicenter study

scientific article published on 29 March 2016

Fatigue induced changes in conical implant-abutment connections.

scientific article

Fracture Resistance of Zirconia Oral Implants In Vitro: A Systematic Review and Meta-Analysis

scientific article published on 24 January 2020

Fracture resistance of zirconia-based implant abutments after artificial long-term aging.

scientific article

Hard tissue reaction to dual acid-etched titanium implants: influence of plaque accumulation. A histological study in humans

scientific article published on 01 August 2003

Histological analysis of loaded zirconia and titanium dental implants: an experimental study in the dog mandible.

scientific article published on 12 September 2015

Impact of shortened dental arch on oral health-related quality of life over a period of 10 years - a randomized controlled trial

article

Implant-retained prostheses: ball vs. conus attachments - A randomized controlled clinical trial.

scientific article published on 27 January 2016

In vitro and in vivo evaluation of a new Opaque system for metal ceramic restorations

scientific article published on 01 March 1995

In vitro reaction of human osteoblasts on alumina-toughened zirconia

scientific article published on 04 August 2009

In vivo study of the initial bacterial adhesion on different implant materials

scientific article

Initial Bacterial Adhesion on Different Yttria-Stabilized Tetragonal Zirconia Implant Surfaces in Vitro.

scientific article published on 04 December 2013

Interactive fibroblast-keratinocyte co-cultures: an in vivo-like test platform for dental implant-based soft tissue integration.

scientific article published on 25 June 2012

Loaded custom-made zirconia and titanium implants show similar osseointegration: an animal experiment.

scientific article

Long-term stability of an injection-molded zirconia bone-level implant: A testing protocol considering aging kinetics and dynamic fatigue.

scientific article published on 19 June 2017

Low temperature degradation and reliability of one-piece ceramic oral implants with a porous surface.

scientific article published on 16 February 2013

Marginal bone-level alterations of loaded zirconia and titanium dental implants: an experimental study in the dog mandible

scientific article published on 10 April 2015

Microbial adhesion on novel yttria-stabilized tetragonal zirconia (Y-TZP) implant surfaces with nitrogen-doped hydrogenated amorphous carbon (a-C:H:N) coatings.

scientific article

Monolithic lithium-disilicate single crowns supported by zirconia oral implants: three-year results of a prospective cohort study.

scientific article published on 27 October 2015

On-line analysis of CAL72 cells on two different titanium surfaces in a perfusion micro-bioreactor.

scientific article published on July 2005

One-piece zirconia oral implants for single-tooth replacement: Three-year results from a long-term prospective cohort study

scientific article published on 13 September 2017

One-piece zirconia oral implants: one-year results from a prospective cohort study. 1. Single tooth replacement

scientific article published on 23 April 2012

Optimal esthetics in single-tooth replacement with the Re-Implant system: a case report

scientific article published on 01 March 1999

Osseointegration of zirconia dental implants in animal investigations: A systematic review and meta-analysis

scientific article published on 6 November 2017

Osteoblast and bone tissue response to surface modified zirconia and titanium implant materials

scientific article published on 10 May 2013

Performance of Zirconia for Dental Healthcare.

scientific article published in February 2010

Peri-implant bone response to retrieved human zirconia oral implants after a 4-year loading period: A histologic and histomorphometric evaluation of 22 cases.

scientific article published on 31 August 2015

Polymers for conventional, subtractive, and additive manufacturing of occlusal devices differ in hardness and flexural properties but not in wear resistance

scientific article published on 04 December 2020

Promotion of osteoblast differentiation in 3D biomaterial micro-chip arrays comprising fibronectin-coated poly(methyl methacrylate) polycarbonate

scientific article published on 25 August 2011

Rehabilitation of an extensive anterior explantation defect--a case report

scientific article published on 01 July 2011

Socket Shield Technique for Implant Placement in the Esthetic Zone: A Case Report.

scientific article published in November 2017

Software-based evaluation of human age: a pilot study

scientific article

Software-based evaluation of human attractiveness: a pilot study

scientific article

Stability and aging resistance of a zirconia oral implant using a carbon fiber-reinforced screw for implant-abutment connection

scientific article published on 01 September 2018

Stability of prototype two-piece zirconia and titanium implants after artificial aging: an in vitro pilot study.

scientific article published on 9 September 2008

Structure and in vitro cytocompatibility of the gastropod shell of Helix pomatia.

scientific article published on 28 September 2006

The Re Implant system for immediate implant placement

scientific article published on 01 January 1997

The clinical performance of all-ceramic implant-supported single crowns: A systematic review and meta-analysis

scientific article published on 01 October 2018

The effect of a calcium hydroxide paste on wound healing and osseointegration of dental implants. A pilot study in beagle dogs

scientific article published on 01 October 1997

The effects of cyclic loading and preparation on the fracture strength of zirconium-dioxide implants: an in vitro investigation

scientific article published on 15 February 2011

The effects of guided bone regeneration and grafting on implants placed into immediate extraction sockets. An experimental study in dogs

scientific article published on 01 August 1998

The gene-expression and phenotypic response of hFOB 1.19 osteoblasts to surface-modified titanium and zirconia

scientific article

Three-dimensional computerized stress analysis of commercially pure titanium and yttrium-partially stabilized zirconia implants

scientific article published on 01 March 2002

Three-year analysis of zirconia implants used for single-tooth replacement and three-unit fixed dental prostheses: A prospective multicenter study.

scientific article published on 12 January 2018

To splint or not to splint oral implants in the implant-supported overdenture therapy? A systematic literature review.

scientific article published on 11 April 2011

Two-piece zirconia oral implants withstand masticatory loads: An investigation in the artificial mouth.

scientific article published on 26 July 2015

Virtual implant planning and fully guided implant surgery using magnetic resonance imaging-Proof of principle

scientific article published on 27 February 2020

Zirconia implants restored with single crowns or fixed dental prostheses: 5-year results of a prospective cohort investigation

scientific article published on 25 January 2020

Zirconia-implant-supported all-ceramic crowns withstand long-term load: a pilot investigation

scientific article published in October 2006

[Bioresorbable barrier membranes for guided bone regeneration around dental implants]

scientific article published on 01 January 2002

[Borderline cases in implantology. Extensive bone augmentation and implants in extremely atrophied upper jaw: two case reports]

scientific article published on 01 January 2008

[Immediate implant-supported bridge for the mandible. A new treatment concept]

scientific article published on 01 January 2002

[Marginal periodontitis and cardiovascular diseases]

scientific article published on 01 January 2001

[Prosthetic treatment of a six-year-old child with hypodontia. A case report]

scientific article published on 01 January 2006

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