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In JoVE (1)

Other Publications (10)

Articles by Gernot Wimmer in JoVE

 JoVE Clinical and Translational Medicine

Oral Biofilm Analysis of Palatal Expanders by Fluorescence In-Situ Hybridization and Confocal Laser Scanning Microscopy

1Department of Orthodontics and Maxillofacial Orthopedics, Medical University of Graz, 2Institute of Hygiene, Microbiology and Environmental Medicine, Medical University of Graz, 3Department of Prosthodontics, Restorative Dentistry, Periodontology and Implantology, Medical University of Graz, 4Institute of Plant Sciences, Karl-Franzens-University Graz


JoVE 2967

We present a protocol for structural and compositional analysis of natural oral biofilm from orthodontic appliances with in situ hybridization (FISH) and confocal laser scanning microscopy (CLSM). Oral biofilm samples were collected from palatal expanders, scraping acrylic-resin flakes off their surface and referring them for molecular processing.

Other articles by Gernot Wimmer on PubMed

Primary Wound Healing After Lower Third Molar Surgery: Evaluation of 2 Different Flap Designs

Wound dehiscences after lower third molar surgery potentially extend the time of postsurgical treatment and may cause long-lasting pain. It was the aim of this prospective study to evaluate the primary wound healing of 2 different flap designs.

Coping with Stress: Its Influence on Periodontal Disease

Various forms of stress behavior were documented and in patients with periodontitis their relationship with periodontal disease was investigated.

Immediate Loading of Single-tooth Implants in the Anterior Maxilla. Preliminary Results After One Year

According to the standard protocol, a load-free healing period is one of the most emphasized requirements for implant integration. Recent studies have encouraged a progressive shortening of the healing period for single-tooth implants and immediate loading has been proposed for the aesthetic zone in the maxilla. The present study evaluated clinical outcomes of immediately loaded FRIALIT-2 Synchro implants 12 months after placement in the maxillary incisal region. In the course of our investigation, nine patients have been treated following an immediate loading protocol. The stepped-screw type implants were inserted with an increasing torque up to 45 Ncm, thus measuring the primary stability of the implants. All implants were immediately restored with unsplinted acrylic resin provisional crowns and the patients provided with occlusal splints. Regular controls were performed at monthly intervals, intraoral radiographs were taken directly after implant placement, 6 and 12 months post insertion. The survival rate, clinical stability (Periotest) and radiographic coronal bone defects (CBD) were evaluated at delivery of the definitive superstructures (CBD 6) and 6 months later (CBD 12). Twelve FRIALIT-2 Synchro stepped screws of 3.8, 4.5 and 5.5 mm diameter and 13 and 15 mm length were placed in the incisal maxillary region. The median Periotest value 6 months post insertion was -2 with a minimum of -5 and a maximum of +2. The mean coronal bone level changes (CBD) at 6 and 12 months were 0.45 and 0.75 mm. No implant failed up to 12 months after insertion, resulting in a 100% survival rate. The presented results showed promising data for immediately loaded single-tooth implants in the anterior maxilla. Periotest values were within the range published for submerged implants. The radiographic coronal bone resorption after 6 and 12 months was even less than evaluated for implants placed in a standard two-stage procedure. It is evident that successful immediate loading protocols require a careful and strict patient selection aimed at achieving the best primary stability and avoiding any excessive functional or non-functional loading. Additional research needs to be done to provide data in situations where problems of poor bone quality, multiple implants or augmentation procedures must be overcome.

Coping with Stress: Its Influence on Periodontal Therapy

Individual stress coping strategies appear to influence periodontal disease: individuals with inadequate stress behavior may be at greater risk of developing disease. The purpose of this 24-month prospective study was to examine the influence of different coping behaviors on a non-surgical periodontal therapy and on the course of periodontal disease.

Periodontal Treatment Improves Endothelial Dysfunction in Patients with Severe Periodontitis

Because epidemiological studies provide evidence that periodontal infections are associated with an increased risk of progression of cardiovascular and cerebrovascular disease, we postulated that endothelial dysfunction, a critical element in the pathogenesis of atherosclerosis, would be present in patients with periodontal disease.

Galvanoforming for Large-span Fixed Restorations in the Treatment of Periodontally Compromised Patients

Large-span fixed restorations in the treatment of periodontally compromised patients are technically difficult to realize. Despite existing techniques of regenerative periodontal surgery and implant therapy aimed at preventing large spans by increasing the number of abutments, prosthetic complications do occur. The present article describes a method that introduces galvanic caps to conventional prosthetic technology, which facilitates clinical procedures and reduces complications by improving precision of fit.

Immediate Provisional Restoration of XiVE Screw-type Implants in the Posterior Mandible

This prospective study evaluated the clinical outcome of immediately restored screw-type implants for the replacement of mandibular (pre)molars. The results were based on survival, clinical stability and on changes of bone levels from implant placement to delivery of the definitive superstructure 6 months after insertion.

A Critical Assessment of Adverse Pregnancy Outcome and Periodontal Disease

BACKGROUND: Pre-term birth is a major cause of infant mortality and morbidity that has considerable societal, medical, and economic costs. The rate of pre-term birth appears to be increasing world-wide and efforts to prevent or reduce its prevalence have been largely unsuccessful. AIM: To review the literature for studies investigating periodontal disease as a possible risk factor for pre-term birth and adverse pregnancy outcomes. MAIN FINDINGS AND CONCLUSION: Variability among studies in definitions of periodontal disease and adverse pregnancy outcomes as well as widespread inadequate control for confounding factors and possible effect modification make it difficult to base meaningful conclusions on published data. However, while there are indications of an association between periodontal disease and increased risk of adverse pregnancy outcome in some populations, there is no conclusive evidence that treating periodontal disease improves birth outcome. Based on a critical qualitative review, available evidence from clinical trials indicates that, although non-surgical mechanical periodontal treatment in the second trimester of pregnancy is safe and effective in reducing signs of maternal periodontal disease, it does not reduce the rate of pre-term birth. Clinical trials currently underway will further clarify the potential role of periodontal therapy in preventing adverse birth outcomes. Regardless of the outcomes of these trials, it is recommended that large, prospective cohort studies be conducted to assess risk for adverse pregnancy outcome in populations with periodontal disease. It is critical that periodontal exposure and adverse birth outcomes be clearly defined and the many potential confounding factors and possible effect modifiers for adverse pregnancy outcome be controlled in these studies. If periodontal disease is associated with higher risk of adverse pregnancy outcome in these specific populations, large multicenter randomized-controlled trials will be needed to determine if prevention or treatment of periodontal disease, perhaps combined with other interventions, has an effect on adverse pregnancy outcome in these women.

Clinical Effectiveness of Photodynamic Therapy in the Treatment of Periodontitis

A randomized-controlled clinical pilot trial was designed to evaluate photodynamic therapy (PDT) for its bactericidal potential and clinical effect in the treatment of periodontitis.

Immediate Provisional Restoration of Screw-type Implants in the Posterior Mandible: Results After 5 Years of Clinical Function

The aim of this prospective study was to evaluate the outcome of immediately provisionally restored implants in the posterior mandible after a minimum of 60 months in function.

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