Percutaneous injuries during oral and maxillofacial surgery procedures

Power chains as an alternative to steel-wire ligatures in temporary maxillomandibular fixation: a pilot study

The aim of this study was to compare two techniques for temporary intraoperative maxillomandibular fixation (TIO-MMF) during orthognathic surgery: steel-wire ligatures versus power chains. Patients undergoing orthognathic surgery between October 2019 and March 2020 were included in a prospective cross-sectional study conducted in three participating hospitals. Data were collected using a standardized measurement form. A total of 44 patients were included, in whom TIO-MMF was applied 79 times. A statistically significant difference in intraoperative loss of stability of the segment relationship was found between steel-wire ligatures (11.4%) and power chains (0%). The mean application time of TIO-MMF differed significantly between steel-wire ligatures (99 seconds) and power chains (157 seconds) (P < 0.001). There was no statistical difference in occurrence of adverse events between the two techniques. This study found that the application of TIO-MMF with power chains is more stable compared to steel-wire ligatures. Steel-wire ligatures were significantly faster to apply, although the absolute difference (less than 1 minute) was small. Other possible advantages of the proposed technique are discussed. The results of this study suggest that power chains for the application of TIO-MMF in orthognathic surgery are a valuable alternative to steel-wire ligatures.

The Prevalence of Blood-Borne Pathogens in Maxillofacial Trauma Patients

BACKGROUND

Blood-borne pathogen infections (BPIs), caused by the human immunodeficiency virus, hepatitis C and hepatitis B viruses pose an occupational hazard to healthcare workers. Facial trauma reconstruction surgeons may be at elevated risk because of routine use of sharps, and a higher than average incidence of BPIs in the trauma patient population.

METHODS

The authors retrospectively reviewed health records of patients admitted to a level 1 trauma center with a facial fracture between January 2010 and December 2015. Patient demographics, medical history, mechanism of injury, type of fracture, and procedures performed were documented. The authors detemined the frequency of human immunodeficiency virus, hepatitis B, and hepatitis C diagnosis and utilized univariable/multivariable analyses to identify risk factors associated with infection in this population.

RESULTS

In total, 4608 consecutive patients were included. Infections were found in 4.8% (n = 219) of patients (human immunodeficiency virus 1.6%, hepatitis C 3.3%, hepatitis B 0.8%). 76.3% of BPI patients in this cohort were identified by medical history, while 23.7% were diagnosed by serology following initiation of care. 39.0% of all patients received surgical treatment during initial hospitalization, of whom 4.3% had a diagnosed BPI. History of intravenous drug use (odds ratio [OR] 6.79, P < 0.001), assault-related injury (OR 1.61, P = 0.003), positive toxicology screen (OR 1.56, P = 0.004), and male gender (OR 1.53, P = 0.037) were significantly associated with a BPI diagnosis.

CONCLUSION

Patients presenting with facial fractures commonly harbor a BPI. The benefit of early diagnosis and risk to surgical staff may justify routine screening for BPI in high risk facial trauma patients (male, assault-related injury, and history of intravenous drug use).

What is a better modality of maxillomandibular fixation: bone-supported arch bars or Erich arch bars? A systematic review and meta-analysis

Any procedure that aims to manage maxillofacial fracture is incomplete without meticulous maxillomandibular fixation (MMF). For decades, Erich arch bars (EABs) have been used for this purpose, but with the advent of bone-supported arch bars (BSABs), more surgeons now prefer them to conventional EABs. The present study was designed to identify which of the two methods is best. An exhaustive literature search was conducted in June 2020 on various electronic databases to select studies that compared EABs and BSABs. Outcomes such as duration of placement, stability, oral hygiene, and complications such as damage to the roots of teeth and needle-stick injury, were analysed. A total of 716 studies were identified, of which seven were eligible for inclusion. The meta-analysis showed that the use of BSABs is significantly faster with no needle penetration and better oral hygiene. Both arch bars are equally stable, but root damage is an associated complication. The available literature to date shows that BSABs are a better option than EABs. However, further research is recommended, as these studies are associated with various confounding factors.

Occupational exposure to bodily fluids in oral and maxillofacial surgery: an evaluation of reporting practices and attitudes among staff at a major teaching hospital in the UK

Our aim was to evaluate experience, practice, and beliefs about reporting of occupational exposures to blood and other body fluids among a sample of 88 healthcare providers working in oral and maxillofacial surgery at Sheffield Teaching Hospitals. We used a cross-sectional survey to evaluate awareness of the Trust's policy for reporting occupational exposure, recent incidence of exposure, and current reporting practices. Beliefs were measured using questions derived from the theory of planned behaviour. Fifty-five people responded, 14 of whom had been exposed to bodily fluids in the previous 12 months. Of those, 10 did not report it. Fifty-three respondents were certain that the Trust had a protocol in place for reporting sharps injuries to staff. Most (n=51) said the Trust had a protocol for reporting mucocutaneous exposure to blood. Respondents placed equal importance on reporting exposures that affected both themselves and patients, but intention to report exposure of patients was significantly higher than for themselves (z score -3.18, p<0.0001). We conclude that OMFS healthcare workers generally think that occupational exposures should be reported, but there are shortcomings in practice.

Percutaneous self-injury to the femoral region caused by bur breakage during surgical extraction of a patient's impacted third molar

Extraction of an impacted third molar is one of the most frequently performed techniques in oral and maxillofacial surgery. Surgeons can suffer numerous external injuries while extracting a tooth, with percutaneous injuries to the hand being the most commonly reported. In this article, we present a case involving a percutaneous injury of the surgeon's femoral region caused by breakage of the fissure bur connected to the handpiece during extraction of the third molar. We also propose precautions to prevent such injuries and steps to be undertaken when they occur.

Antibacterial activity of a sterile antimicrobial polyisoprene surgical glove against transient flora following a 2-hours simulated use

Background

A surgical glove will protect surgeons and patients only if the glove’s integrity remains intact. However, several studies have demonstrated that undetected micro-perforations of surgical gloves are common. Because of the possibility of surgical glove puncture, an antimicrobial surgical glove was developed. The aim of this laboratory based experimental study was to assess the antibacterial efficacy of the interior chlorhexidine-gluconate (CHG)-coat of an antimicrobial synthetic polyisoprene surgical glove by using a standardized microbiological challenge.

Methods

Sixteen healthy adult participants donned one antimicrobial surgical glove and one non-antimicrobial surgical glove randomly allocated to their dominant and non-dominant hand following a crossover design. During a 2-h wear time, participants performed standardized finger and hand movements. Thereafter, the interior surface of excised fingers of the removed gloves was challenged with 8.00 log₁₀ cfu/mL S. aureus (ATCC 6538) or K. pneumoniae (ATCC 4352), respectively. The main outcome measure was the viable mean log₁₀ cfu counts of the two glove groups after 5 min contact with the interior glove’s surface.

Results

When comparing an antimicrobial glove against an untreated reference glove after 2-h simulated use wear-time, a mean reduction factor of 6.24 log₁₀ (S. aureus) and 6.22 log₁₀ (K. pneumoniae) was achieved after 5 min contact.

Conclusion

These results demonstrate that wearing antibacterial gloves on hands does not negatively impact their antibacterial activity after 2-h of wear. This may have a potential benefit for patient safety in case of glove puncture during surgical procedures.

Manual reduction of mandibular fractures before internal fixation leads to shorter operative duration and equivalent outcomes when compared with reduction with intermaxillary fixation

PURPOSE

Open reduction of mandibular fractures before internal fixation is most commonly performed by 1 of 2 methods: intermaxillary fixation (IMF) or manual reduction. There are risks to both patient and clinician associated with using IMF. Furthermore, previous retrospective studies have failed to show any advantage in its use. The purpose of this study was to directly compare the use of manual reduction (experimental group) and IMF (control group) in open reduction-internal fixation of mandibular fractures.

MATERIALS AND METHODS

Patients who presented with isolated mandibular fractures at 2 hospitals in Queensland, Australia, from May 2009 to June 2010 were enrolled in a prospective controlled trial comparing IMF and manual reduction. The outcome measures were operative duration (primary outcome), as well as radiographic outcome, occlusal outcome, and complications (secondary outcomes). The patient and assessor were blinded to the type of reduction used before fixation. The study hypothesis is that manual reduction allows internal fixation in a shorter time than IMF with an equivalent outcome.

RESULTS

We recruited 50 patients, 26 allocated to IMF and 24 allocated to manual reduction before internal fixation of mandibular fractures. IMF was associated with an increased duration of procedure (P < .001) and increased complication rate (P = .063), without any observable benefit with regard to either radiographic outcome or occlusal outcome.

CONCLUSIONS

IMF is not required in open reduction-internal fixation of mandibular fractures that met our inclusion criteria. IMF is associated with increased costs to the health service and risks to both the patient and clinician.

Risk of surgical glove perforation in oral and maxillofacial surgery

Oral and maxillofacial surgery, which involves several sharp instruments and fixation materials, is consistently at a high risk for cross-contamination due to perforated gloves, but it is unclear how often such perforations occur. This study aimed to address this issue. The frequency of the perforation of surgical gloves (n=1436) in 150 oral and maxillofacial surgeries including orthognathic surgery (n=45) was assessed by the hydroinsufflation technique. Orthognathic surgery had the highest perforation rate in at least 1 glove in 1 operation (91.1%), followed by cleft lip and palate surgery (55.0%), excision of oral soft tumour (54.5%) and dental implantation (50.0%). The perforation rate in scrub nurses was 63.4%, followed by 44.4% in surgeons and first assistants, and 16.3% in second assistants. The odds ratio for the perforation rate in orthognathic surgery versus other surgeries was 16.0 (95% confidence interval: 5.3-48.0). The protection rate offered by double gloving in orthognathic surgery was 95.2%. These results suggest that, regardless of the surgical duration and blood loss in all fields of surgery, orthognathic surgery must be categorized in the highest risk group for glove perforation, following gynaecological and open lung surgery, due to the involvement of sharp objects.

Qualitätssicherung und Hygiene beim ambulanten Operieren

BACKGROUND

According to the German Law on Infectious Diseases (Infektionsschutzgesetz or IfSG) German outpatient centres must provide evidence of maintaining certain standards of hygiene and record their nosocomial infection rates. To fulfill their legal obligations, the Commission for Hospital Hygiene and the Prevention of Infection recommends surveillance modules such as that known as AMBU-KISS.

MATERIALS AND METHODS

The AMBU-KISS project centre implemented a survey to evaluate all procedures relevant to hygiene, surveillance of surgical site infections, and facilities available at centres participating in the AMBU-KISS surveillance programme. The questionnaire was returned by 99 of 110 participants.

RESULTS AND DISCUSSION

All the centres possess cleaning and disinfection schemes, and practically all of them use written instructions on the processing of instruments and surgical hand disinfection procedure. Many of the participants spend too much time on surgical hand disinfection and presurgical skin disinfection.

CONCLUSION

The survey demonstrates that hygienic conditions at centres participating in AMBU-KISS are largely satisfactory. However, there is nevertheless a need to optimise infection control measures.

A new method for temporary maxillo-mandibular fixation

We present a novel device which is an alternative to surgical wire for per operative maxillo-mandibular fixation prior to plate placement. It is easy to apply, causes minimal mucosal trauma and can be used in association with elastic chain.

Occupational exposures to human immunodeficiency virus, hepatitis B virus, and hepatitis C virus: risk, prevention, and management

Current data indicate that the risk for transmitting bloodborne pathogens in dental health care settings is low. Pre-exposure hepatitis B vaccination and the use of standard precautions to prevent exposure to blood are the most effective strategies for preventing DHCP from occupational infection with HIV, HBV or HCV. Each dental health care facility should develop a comprehensive written program for preventing and managing occupational exposures to blood that: (1) describes the types of blood exposures that may place DHCP at risk for infection; (2) outlines procedures for promptly reporting and evaluating such exposures; and (3) identifies a health care professional who is qualified to provide counseling and perform all medical evaluations and procedures in accordance with the most current USPHS recommendations. Finally, resources should be available that permit rapid access to clinical care, testing, counseling, and PEP for exposed DHCP and the testing and counseling of source patients.

Occupational blood exposure and HIV infection among oral and maxillofacial surgeons

OBJECTIVE

The purpose of this study was to examine occupational blood exposure and the seroprevalence of HIV infection among oral and maxillofacial surgeons.

STUDY DESIGN

Three hundred twenty-one oral and maxillofacial surgeons attending an annual meeting voluntarily and anonymously participated in an HIV serosurvey and completed a questionnaire assessing practice and demographic factors. Statistical tests included the Wilcoxon rank-sum test and the chi-squared test.

RESULTS

Eighty percent of those who completed the survey reported one or more blood-skin contacts within the previous month. The mean number of percutaneous injuries within the previous year was 2.36 +/- 0.2. Wire was most commonly associated with percutaneous injuries. Oral maxillofacial surgeons who reported three or more percutaneous injuries performed more fracture reductions than oral and maxillofacial surgeons reporting no percutaneous injuries (p < 0.01). No participant was HIV-positive; the upper limit of the 95% confidence interval was 1.15%.

CONCLUSION

The findings suggest that the occupational risk for HIV infection in oral surgery is very low even though most oral and maxillofacial surgeons experienced blood contact. Associations of percutaneous injuries with fracture reductions and wire may assist in the development of new techniques and equipment to minimize blood exposures.