Modern Composite Materials and Technical Strategies in Posttraumatic Augmentation Rhinoplasty

The selection of ideal posttraumatic augmentation rhinoplasty materials and technical strategies has always been a pressing challenge.Owing to the complexity of the traumatic nasal anatomical structure,such procedures are more complicated than ordinary cosmetic rhinoplasty.The choice of reconstruction material should emphasize its inherent characteristics,such as biocompatibility,anti-infective ability,strength,and plasticity.With the development of rhinoplasty,the choice of material is less limited and composite materials have become mainstream.This review outlines current composite materials and techniques in posttraumatic augmentation rhinoplasty.     

Bilateral total deafness after preparation of wild boar meat

IntroductionStreptococcus suis is responsible for a zoonosis for which Suidae (pigs and wild boars) constitute the reservoir, mainly in Asia, with a much lower prevalence in Europe. The predominant clinical manifestation is meningitis, possibly resulting in deafness.Case reportWe report the case of a woman hospitalised for meningitis complicated by labyrinthitis, occurring several hours after preparing a meal composed of wild boar meat. Despite the presence of intracochlear fibrosis, the patient was managed by sequential bilateral cochlear implants.DiscussionThe discussion presents a review of the international literature and describes the mechanisms responsible for hearing loss related to this rare zoonosis.     

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??Objective    The difference of implant stability quotient??ISQ??was compared between SLA and SLActive implants in the posterior mandible and maxilla by resonance frequency analysis??RFA?? in order to evaluate the clinical predictability of Straumann SLActive implants. Methods    Totally 33 SLA and 34 SLActive implants were placed in the posterior mandible and maxilla of 55 patients. Each implant was tested by Osstell ISQ for RFA after being inserted for 0??2??4??6??and 12 weeks. Results    Significant differences of ISQ were observed in the two groups ??SLA and SLActive?? after being implanted for 2??4??6??and 12 weeks. However??there was no significant difference after 0 week. Conclusion    SLActive exhibits the advantages of improving osseointegration??shortening the healing time??and increasing the clinical predictability.     

Advance in Functional Restoration of Injured Nerve with Low Level Laser and its Utilization in the Dental and Maxillofacial Region

The inferior alveolar nerve and facial nerve are the two most important nerves in the dental and maxillofacial region. The injury to them is one of the major postoperative complications after alveolar surgery and orthognathic surgery. However, recovering the nerve function after injury takes a long time and the recovery effect tends to be unsatisfactory. In recent years, an intensively investigated technique, low level laser which has been applying in assisting the recovery of nerve function, has been gradually proved to be effective in clinically treating postoperative nerve injury. In this article we review in terms of the mechanisms involved in low level laser-assisted functional restoration of nerve injury and its clinical application in the recovery of nerve function in the dental and maxillofacial area as well.     

The Incidence and Temporal Trends of Dislocation After the Use of Constrained Acetabular Components and Dual Mobility Implants in Primary Total Hip Replacements: A Systematic Review and Meta-Analysis of Longitudinal Observational Studies

BackgroundDislocation after a primary total hip replacement (pTHR) remains a common cause of treatment failure. Constrained acetabular components (CACs) and dual mobility implants (DMIs) may mitigate this in patients at high risk of dislocation or with significant intraoperative instability. This meta-analysis evaluated the incidence and temporal trends of dislocation after implantation with CACs and DMIs in pTHR.MethodsLongitudinal studies reporting dislocation after the use of CACs or DMIs in pTHR were sought from Medline and Embase to September 2020. Secondary outcomes included revision surgery for dislocation and for all causes.ResultsA total of 46 studies (3 CAC and 43 DMI) comprising 582 CACs and 18,748 DMIs were included. The pooled incidence of dislocation was 1.08% (95% confidence interval [CI]: 0.00-3.72; range 0.27%-2.60%) over a weighted mean follow-up of 4.1 years for CACs, compared with 0.25% (95% CI: 0.08-0.46; range 0.00%-4.72%) over 6.2 years for DMIs. For DMIs, there was a temporal decline in dislocations from the 1980s onward, and dislocation rates remained low (<1%) until 15 years postoperatively. There were insufficient data for similar analysis of CACs. All studies were at high risk of bias. The incidence of revision for dislocation after CACs was 0.3% vs 0.1% for DMIs, and the incidence of revision for all causes after CACs was 4.8% vs 2.7% for DMIs.ConclusionDMIs demonstrated a lower incidence of dislocation compared with CACs; however, there was a relative absence of CACs used in the context of pTHR in the literature. Temporal trends in dislocation have improved over time for DMIs.