Biomedical subjects

Mohammad Anwar Bamber

Publications and source records attributed to Mohammad Anwar Bamber.

3 recordsLinked to original sources

PubMed2004

Evaluation of facial soft tissue changes with optical surface scan after surgical correction of Class III deformities.

PURPOSE: To evaluate the soft tissue changes after correction of Class III dentoskeletal deformity with orthognathic surgery using the optical surface scanner as a 3-dimensional imaging tool and thin-plate splines as a morphometric analysis. PATIENTS AND METHODS: Forty-six patients with Class III dentoskeletal relationship who underwent a bimaxillary orthognathic surgical procedure involving advancement of the maxilla and mandibular setback to correct the deformity and create a Class I dentoskeletal relationship were included. Optical surface scans (lasergraphs) were obtained from all patients preoperatively and 6 months postoperatively. They were evaluated for the soft tissue changes 3-dimensionally and on the profile line. The cephalographs taken pre- and postoperatively were digitized and evaluated using the CogSoft digitizing software (Consultant Orthodontists Group Software, Bristol, United Kingdom) to confirm whether the preoperative surgical plan was applied. RESULTS: The soft tissue change in different areas of the face ranged from 30% on the nasal tip to 80% on subnasale and from 50% on subcomissural region corresponding to lateral parts of the mandibular body to 100% on the pogonion. The direction of soft tissue movement was not solely forwards and backwards on a horizontal plane but had upward and downward vectors. CONCLUSIONS: The soft tissue changes following orthognathic surgery depend on various factors; hence it can be difficult to predict. However, there is a general trend as discussed in this study for the direction and amounts of facial soft tissue changes in the middle and lower facial thirds.

Cephalometry↗

PubMed2004

A U-loop pressure clip for earlobe keloid.

Pressure therapy using custom-made pressure clips or splints is widely used for the treatment of ear keloid scars; however, it is often difficult to control the amount and direction of pressure applied. One of the most common complications of this therapy is ulceration due to excessive soft tissue pressure, resulting in delays and prolonged treatment time. This article presents a U-loop pressure clip of a novel design incorporating an adjustable U-loop component. This design allows for more control over the amount and direction of the pressure applied on the scar tissues.

Ear, External↗

PubMed2003

Model surgery with a passive robot arm for orthognathic surgery planning.

PURPOSE: The aims of the study were to assess the degree of accuracy of model surgery performed manually using the Eastman technique and to compare it with model surgery performed with the aid of a robot arm. PATIENTS AND METHODS: Twenty-one patients undergoing orthognathic surgery gave consent for this study. They were divided into 2 groups based on the model surgery technique used. Group A (52%) had model surgery performed manually, whereas group B (48%) had their model surgery performed using the robot arm. Patients' maxillary casts were measured before and after model surgery, and results were compared with those for the original treatment plan in horizontal (x-axis), vertical (y-axis), and transverse (z-axis) planes. RESULTS: Statistical analysis using Mann-Whitney U test for x- and y-axis and independent sample t test for z-axis have shown significant differences between both groups in x-axis (P =.024) and y-axis (P =.01) but not in z-axis (P =.776). CONCLUSIONS: Model surgery performed with the aid of a robot arm is significantly more accurate in anteroposterior and vertical planes than is manual model surgery. Robot arm has an important role to play in orthognathic surgery planning and in determining the biometrics of orthognathic surgical change at the model surgery stage.

Cephalometry↗