Philippe Perrin

Philippe Perrin
Universität Bern | UniBe · Department of Restorative Dentistry

About

22
Publications
7,769
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340
Citations
Citations since 2016
9 Research Items
302 Citations
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201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050
Introduction
Skills and Expertise

Publications

Publications (22)
Article
Objectives This study aimed to analyze the longevity of direct metal-wire reinforced composite fixed partial dentures (MRC-FPD) and factors influencing their survival and success. Methods Within one private practice 513 MRC-FPD were directly applied. The preparation of a proximal cavity in abutment teeth was not limited. MRC-FPD were reinforced by...
Article
Full-text available
Objectives This retrospective, single-center, practice-based cohort study aimed to analyze the longevity of direct fiber reinforced composite fixed partial dentures (DFRC-FPD) and to analyze factors influencing their survival and success. Methods Within one private practice 100 DFRC-FPD were directly applied. The preparation of a proximal cavity w...
Article
The aim of this study was to evaluate the performance of Galilean and Keplerian loupes in the endodontic lumen with and without integrated light. Although the use of an operating microscope is widely recommended in endodontics it is uncertain whether an adequate loupe system with coaxial light source might replace the microscope for some endodontic...
Article
Objectives: To evaluate the impact of magnification aids on the precision of tooth preparation under simulated clinical conditions. Methods and materials: Two plastic blocks marked with a geometric shape were fixed in a dental phantom head: a circle as the distal surface of tooth 16 (UNS 3) and a y-shaped figure as the occlusal surface of tooth...
Article
Objectives The aim of this study was (i) to evaluate the visual performance of dental hygienists in their clinical environment and (ii) to analyse the relationship between self‐assessed and objectively measured visual acuity. Methods The near visual acuity of 191 dental hygienists and dental hygiene students was self‐assessed with a visual analogu...
Article
Unimpaired near vision is crucial in dentistry, but appropriate visual tests at dental working distance are not publicly available. The aim of this study was to validate a novel visual triage test for dentists that is easy to use and freely available. The near visual acuity at 300 mm of 106 dental professionals (aged 21-65 years) was assessed with...
Article
Purpose: To assess the visual performance of Swiss hand surgeons in an environment similar to their workplace. The influence of Galilean (lenses only) and Keplerian loupes (lenses and prisms), the surgeon's age, and the credibility of a self-assessment of his or her own optical performance were evaluated. Methods: Sixty-three hand surgeons betwe...
Article
Full-text available
This review discusses visual acuity in dentistry and the influence of optical aids. Studies based on objective visual tests at a dental working distance were included. These studies show dramatic individual variation independent of the dentists’ age. The limitations due to presbyopia begin at an age of 40 years. Dental professionals should have the...
Article
Objectives: The aims of the present study in Swiss dental practices were 1) to provide an update on the prevalence of different magnification devices, 2) to examine the relationship between self-assessed and objectively measured visual acuity, and 3) to evaluate the visual performance of dentists in the individually optimized clinical situation of...
Article
Full-text available
This study examined the impact of age and magnification on the near visual acuity of dentists in their private practice under simulated clinical conditions. Miniaturized visual tests were fixed in posterior teeth of a dental phantom head and brought to 31 dentists in their respective private practice. The visual acuity of these dentists (n = 19, ≥4...
Article
To report on an intraradicular visual test in a simulated clinical setting under different optical conditions. Miniaturized visual tests with E-optotypes (bar distance from 0.01 to 0.05 mm) were fixed inside the root canal system of an extracted maxillary molar at different locations: at the orifice, a depth of 5 mm and the apex. The tooth was moun...
Article
Full-text available
The indications for direct resin composite restorations are nowadays extended due to the development of modern resin materials with improved material properties. However, there are still some difficulties regarding handling of resin compos- ite material, especially in large restorations. The reconstruction of a functional and individual occlusion i...
Article
Full-text available
Objectives: This study examined the near visual acuity of dentists in relation to age and magnification under simulated clinical conditions. Materials and methods: Miniaturized visual tests were performed in posterior teeth of a dental phantom head in a simulated clinical setting (dental chair, operating lamp, dental mirror). The visual acuity o...
Article
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Article
We evaluated the near visual acuity of 40 dentists and its improvement by using different magnification devices. The acuity was tested with miniaturized E-optotype tests on a negatoscope under the following conditions: 1. natural visual acuity, 300 mm; 2. single lens loupe, 2×, 250 mm; 3. Galilean loupe, 2.5×, 380 mm; and 4. Keplerian loupe, 4.3×,...
Conference Paper
Objectives: The aim of this intervention study was to test if the visual acuity has in impact on operative skills with a dental bur. Methods: Twenty-nine undergraduate students with half a year of phantom head training underwent a classical optical test at an optician. In the first run, the students were instructed to prepare two different geometri...
Conference Paper
Objectives: The aim of this study was to evaluate the differences in natural visual acuity and its improvement by using different magnification devices. Materials and methods: Miniaturized visual tests as used by opticians (E-optotypes) were undertaken. They were fixed in approximal cavities of four posterior teeth in a mannequin head. Fourte...
Article
Full-text available
With the visualization provided by the operating microscope (OM), it is now possible to place fillings in formerly inaccessible areas and work in a way that preserves the most enamel and/or dentin. The OM enables working with full overview in interdental areas or in hard-to-reach areas around crowns. The good view not only enables new forms of ther...
Article
Full-text available
The great advantages of using a stereoscopic operating microscope in endodontics and especially in endodontic surgery are being increasingly advocated in postgraduate training courses and numerous publications. Widely underestimated, however, is the fact that this tool may open new horizons to almost all dental specialities and will improve ergonom...

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Project (1)