Change in Pull-Out Force during Resorption of Magnesium Compression Screws for Osteosynthesis of Mandibular Condylar Fractures

Kozakiewicz, Marcin

doi:10.3390/ma14020237

Cited by 8 publications

(11 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Metallic resorbable osteosynthesis is under consideration [10]. This may be an important alternative to nonresorbable titanium fixation in the future [17].…”

Section: Resultsmentioning

confidence: 99%

Choice of Screws for Fixation of Mandibular Condyle Fractures Guided by Anthropometric Data

Bielecki-Kowalski

Kozakiewicz

2021

Applied Sciences

Self Cite

View full text Add to dashboard Cite

Open reduction and internal fixation (ORIF) is becoming increasingly common in treatment of the condylar process, including mandible head fractures. This approach significantly improves the results in terms of anatomical reduction of bone fragments, and shortens the treatment time, allowing for early functional recovery. The success of ORIF is largely determined by the stability of the osteosynthesis. The stabilization effect depends on the screw type and length of the plate used, in addition to the diameter and length of the screws used. The aim of this study was to determine the largest possible screw length that can be used in ORIF of the mandibular condyle considering the variable bone thickness. A total of 500 condyles were examined using computer tomography (CT)-based 3D models in Caucasians. For all models, three measurements were made in the frontal projection in places typical for the stabilization of osteosynthesis plates in the fractures of the condylar process: the base, the top, and the sigmoid notch. In addition, one measurement of the mandible head was made in the place of the greatest width. The results showed that 8 mm screws should be used in the region of the condylar base as the longest anatomically justified screw, whereas in the area of a sigmoid notch only 1.5–2 mm screws should be used. Measurements in the area of the neck top revealed statistically significant differences in the measurements between the sex of patients, with average differences below 1 mm (p < 0.05). In this area, the maximal length of the screw was found to be 10 mm. In mandibular head fractures, the use of long screws is extremely important due to the desired effect of fragment compression. Statistically significant differences were found in the measurement results between women and men. The maximal screw length for bicortical fixation was found to be 22 mm in men and 20 mm in women. In post-traumatic patients, the ability to obtain a clear measurement is often limited by a deformed anatomy. Taking into account the fact that the fracture stability is influenced by both the plate length and the length of the fixation screws, an assessment of the standard measurement values in a cohort group will improve the quality of the surgical fixations of the fractures.

show abstract

“…Metallic resorbable osteosynthesis is under consideration [10]. This may be an important alternative to nonresorbable titanium fixation in the future [17].…”

Section: Resultsmentioning

confidence: 99%

Choice of Screws for Fixation of Mandibular Condyle Fractures Guided by Anthropometric Data

Bielecki-Kowalski

Kozakiewicz

2021

Applied Sciences

Self Cite

View full text Add to dashboard Cite

show abstract

“…The group of patients treated with magnesium alloy screws required, on average, a higher number of screws per fixation than the reference group due to the reasons cited above [31,40]. On the other hand, shorter magnesium screws were used than titanium screws.…”

Section: Discussionmentioning

confidence: 98%

“…The decrease in the pull-out force that occurs with the progression of screw resorption may cause early bone healing to be vulnerable to displacement, i.e., loss of mandible ramus height. For this reason, it seems clinically reasonable to investigate magnesium osteosynthesis and to recommend using more screws (Figure 1) and/or combining thinner screws of 1.8 mm with thicker screws, i.e., 2.3 or 3.2 mm [40].…”

Section: Discussionmentioning

confidence: 99%

Clinical Evaluation of Magnesium Alloy Osteosynthesis in the Mandibular Head

2022

Self Cite

View full text Add to dashboard Cite

Titanium alloys are used in skeletal surgery. However, once bone union is complete, such fixation material becomes unnecessary or even harmful. Resorbable magnesium materials have been available for several years (WE43 alloy). The aim of this study was to clinically compare magnesium versus titanium open reduction and rigid fixations in mandible condylar heads. Ten patients were treated for fractures of the mandibular head with magnesium headless compression screws (2.3 mm in diameter), and 11 patients were included as a reference group with titanium screws (1.8 mm in diameter) with similar construction. The fixation characteristics (delay, time, and number of screws), distant anatomical results (mandibular ramus height loss, monthly loss rate, and relative loss of reconstructed ramus height), basic functional data (mandibular movements, facial nerve function, and cutaneous perception) and the influence of the effects of the injury (fracture type, fragmentation, occlusion, additional fractures, and associated diseases) on the outcome were evaluated. The long-term results of treatment were evaluated after 18 months. Treatment results similar to those of traditional titanium fixation were found with magnesium screws. Conclusions: Resorbable metal screws can be a favored option for osteosynthesis because surgical reentry can be avoided. These materials provide proper and stable treatment results.

show abstract

“…The routine second surgical intervention in the treatment of fractures is to remove the fixation material [ 4 , 10 ]. In order to avoid the reoperation, a research was undertaken on the possibility of using fixation screws made of resorbable materials [ 42 , 43 ]. Promising results from recent studies indicate that the use of magnesium alloy screws can solve the issue of double operations and thus reduce postoperative complications [ 42 , 43 ].…”

Section: Discussionmentioning

confidence: 99%

Variants and Modifications of the Retroauricular Approach Using in Temporomandibular Joint Surgery: A Systematic Review

Sikora

Chęciński²,

Nowak³

et al. 2021

JCM

View full text Add to dashboard Cite

Introduction: The retroauricular approach (RA) has been developed in order to expose the temporomandibular joint in a way that minimizes the risk of injury to the facial nerve and masks the postoperative scar. One of its characteristics is an excellent posterolateral view of the mandibular head, which allows for the preservation of the lateral temporomandibular joint ligaments in the course of open intracapsular surgery. Aim: The aim of this study is to systematically review the currently used variants and modifications of RA. Materials and Methods: The construction of the following study is based on PICOS and PRISMA protocols. A systematic literature search was performed based on the PubMed and BASE search engines; furthermore the authors performed a more detailed search in the Google Scholar article database as well as a loop search within the references of papers included in the systematic review. Results: Searching medical articles databases, Google Scholar, and references yielded a total of 85 records. First the titles and abstracts were blindly screened which was followed by a full-text eligibility check resulting in eventually including and qualifying 7 articles for detailed analysis. Discussion: All known variants and modifications of RA are characterized by high safety for the facial nerve and an aesthetically hidden scar. There were no reports of auricle necrosis in the collected material. Conclusions: In this systematic review, 2 variants and 2 modifications of RA that allow for open temporomandibular joint surgery have been identified; all of them together cover a large spectrum of indications for joint surgery, including reposition and osteosynthesis of mandibular head fractures, eminoplasty, or eminectomy and treatment of some forms of ankylosis.

show abstract

Change in Pull-Out Force during Resorption of Magnesium Compression Screws for Osteosynthesis of Mandibular Condylar Fractures

Cited by 8 publications

References 69 publications

Choice of Screws for Fixation of Mandibular Condyle Fractures Guided by Anthropometric Data

Choice of Screws for Fixation of Mandibular Condyle Fractures Guided by Anthropometric Data

Clinical Evaluation of Magnesium Alloy Osteosynthesis in the Mandibular Head

Variants and Modifications of the Retroauricular Approach Using in Temporomandibular Joint Surgery: A Systematic Review

Contact Info

Product

Resources

About