Biomedical subjects

Marius Steigmann

Publications and source records attributed to Marius Steigmann.

5 recordsLinked to original sources

PubMed2006

Pericardium membrane and xenograft particulate grafting materials for horizontal alveolar ridge defects.

PURPOSE: The purpose of this study was to evaluate the clinical feasibility of using a native collagen physical resorbable barrier made of bovine pericardium to augment localized alveolar ridge defects for the subsequent placement of dental implants. MATERIALS & METHODS: There were 8 systemically healthy patients with 19 implant sites (aged 35 to 68 years), with inadequate dental alveolar ridge widths, selected for study. All patients completed initial therapy, which included scaling, root planning, and oral hygiene instruction. All ridge defects were augmented with bovine xenograft and a collagen pericardium membrane. Horizontal (width) hard tissue measurements were taken the day of ridge augmentation surgery, or implant placement and augmentation (baseline), and at the 6-month (reentry or uncovering) surgery. RESULTS: The change in ridge width varied from a loss of 0.2 mm to a gain of 7.8 mm, measured clinically with a mean value of 3.0368 and a median of 2.8 mm from baseline. CONCLUSIONS: The results suggested that pericardium collagen membrane may be a suitable component for augmentation of localized alveolar ridge defects in conjunction with different xenografts.

Adult↗

PubMed2006

Piezosurgery: basics and possibilities.

Useful in a variety of oral surgery procedures, piezosurgery has therapeutic features that include a micrometric cut (precise and secure action to limit tissue damage, especially to osteocytes), a selective cut (affecting mineralized tissues, but not surrounding soft tissues), and a clear surgical site (the result of the cavitation effect created by an irrigation/cooling solution and oscillating tip). Because the instrument's tip vibrates at different ultrasonic frequencies, since hard and soft tissues are cut at different frequencies, a "selective cut" enables the clinician to cut hard tissues while sparing fine anatomical structures (e.g., schneiderian membrane, nerve tissue). An oscillating tip drives the cooling-irrigation fluid, making it possible to obtain effective cooling as well as higher visibility (via cavitation effect) compared to conventional surgical instruments (rotating burs and oscillating saws), even in deep spaces. As a result, implantology surgical techniques such as bone harvesting (chips and blocks), crestal bone splitting, and sinus floor elevation can be performed with greater ease and safety.

Humans↗

PubMed2006

Esthetic buccal flap for correction of buccal fenestration defects during flapless immediate implant surgery.

BACKGROUND: Clinically, it is a tremendous challenge to create natural gingival esthetics after immediate or delayed implant placement. Hence, flapless immediate implant surgery has been proposed to overcome the shortfalls of these techniques. Nonetheless, one of the major limitations for this technique is its inability to correct localized horizontal/vertical deficiency, dehiscence, or fenestration without jeopardizing esthetic outcomes. Therefore, the aim of this paper was to present a new flap design, the esthetic buccal flap (EBF), aimed at overcoming this potential problem while maintaining the optimal esthetic appearance. METHODS: Five consecutively EBF-treated patients with simultaneous implant placement were included in this pilot case study. Clinical measurements were taken at the time of prosthesis insertion and 6 and 12 months after surgery. These included soft tissue height, papillae appearance, scar appearance, and mid-buccal probing depth. RESULTS: Data obtained from this pilot case study showed that soft tissue height was preserved, and papillae appearance remained the same as at presurgery. No scar tissue was reported in any cases. Mid-buccal probing depths remained consistent throughout the study. CONCLUSION: The results indicate that EBF, together with simultaneously guided bone augmentation, allows clinicians to correct apical buccal fenestration defects while maintaining the supraosseous soft tissue during flapless immediate implant surgery.

Adult↗

PubMed2005

A comparative study of bilateral sinus lifts performed with platelet-rich plasma alone versus alloplastic graft material reconstituted with blood.

The objective of this study was to compare the alveolar bone growth in the 2 sides of the maxillary sinus after bilateral sinus lift procedures were performed with the simultaneous placement of dental implants in 20 consecutive patients. After elevation of the Schneiderian membrane, one side had only platelet-rich plasma (PRP) gel applied, while the other had placed only alloplastic graft material reconstituted with blood. Both open window and closed window techniques were used in ridges with > or =9 mm residual crest of bone. Results indicate that using PRP alone in cases with >7 mm residual crest can produce bone growth. Preliminary results indicate that in cases with a minimum of 7-mm crestal bone, it is possible to use a crestal approach for sinus grafting, with PRP alone and implant placement for bone growth.

Alveolar Ridge Augmentation↗

PubMed2004

Mini-implants to reconstruct missing teeth in severe ridge deficiency and small interdental space: a 5-year case series.

Two of the major obstacles for dental implant placement to replace missing teeth are the lack of adequate bone width and interdental space. Overcoming these limitations requires bone augmentation procedures that transform the deficient ridge into a ridge that is capable of receiving conventional tooth-form implants. In the case of inadequate interdental space, orthodontic tooth movement is advocated before implantation. Using narrow-diameter mini-implants allows the clinician to overcome both of these obstacles without the need for additional grafting procedures or orthodontic tooth movement. The mini-implants are immediately loaded and restored so as to enable the patient to have satisfactory mastication and aesthetic appearance. A 5-year follow up of 32 implants demonstrates the benefit of this treatment modality.

Adult↗