Postural Low Back Pain
Conditions
Brief summary
Background: Attention and awareness towards MSDs in the dental profession has increased considerably in recent years. From recent literature reviews, it is learned that prevalence of MSDs in dentists is 64-93%. It has been seen that the use of magnification systems not only improves the operator's visual capabilities, but also allows for a more correct posture, and to prevent the onset of back and neck disorders. Purpose and methods: Evaluate dentist posture during extraction of third lower molars depending on whether the operator uses the naked eye, surgical loupes or surgical microscope systems. Data will be evaluated through the index RULA (rapid upper limb assesment) to define whether there is a change in exposure to the risk of MSDs (Muskoloskeletal disease) and using fiducial markers for the movement analysis of the operator during the procedure.
Detailed description
Study design: randomized controlled clinical trial. Purpose: Evaluate dentist posture during extraction of third lower molars depending on whether the operator uses the naked eye, surgical loupes or surgical microscope systems. Methods: Data will be analysed through the index RULA (rapid upper limb assesment) to define whether there is a change in exposure to the risk of MSDs (Muskoloskeletal disease). Posture assessment will be based on 3-D data of the upper body, which can discriminate spatial displacements up to 2mm in translation and 1 degree in rotation. The surgical intervention will be performed under local anesthesia (mepivacaine 20 mg/ml with adrenaline 1:100000) and by the use of microscope (OPMI Movena S7) or surgical loupes or no magnifying system. During this session the following data will be collected for the study: 1. Demographic data (baseline) 2. Medical and dental history 3. Parameters related to the lower third molar 4. Radiographic tests 5. Marker operator position 6. Pre- and postoperative photographs Each patients will be recalled for follow-up visits at 7 days. During this session will be carried out the removal of stitches and data will be recorded as follows: 1. VAS pain and trismus. 2. Number of painkillers taken 3. Control photographs 4. Posse Scala
Interventions
PROCEDUREOperating microscope
Third molar extraction using microscope
PROCEDURESurgical loupes
Third molar extraction using loupes with co-axial illumination
PROCEDURENaked eyes
Third molar extraction using naked eyes
Sponsors
University of Milan
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* patients elements 38 or 48 in dysodontiasis requiring a complex extraction * able to sign informed consent
Exclusion criteria
* general contraindication to surgical treatment * pregnancy * lactation * age under 18 years
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Rapid Upper Limb Assessment (RULA) | After the operative performance, an average 15 minutes | Evaluation tool for ergonomic investigations of workplaces. Values are expressed as RULA scores. |
| Posture and fatiguing positions | During the surgical procedure (one frame every second during the intervention) | Specific postural analysis using fiducial markers: a set of markers on the back of a tight T-shirt worn by the dentist during the whole operation will be acquired using a 5 MPixels camera at 2 fps. We will place the markers in order to focus our analysis on the following parameter: the neck position with respect to the trunk, the trunk orientation with respect to the vertical axis, the twist and bending of the neck and back, the overall static position duration of the neck and the back. The rotation angles of every marker will be extracted and stored for every frame of the recorder video. |
Countries
Italy
Outcome results
None listed