Objectives This randomized controlled trial aimed to assess whether structured dietary interventions, implemented both before and after orthognathic surgery, could minimize postoperative weight loss and thereby enhance recovery during the first eight weeks. Material and Methods The study was conducted at Aalborg University Hospital, Denmark, from April 2017 to April 2022, involving patients undergoing single- or bimaxillary surgery. Participants were randomly allocated into two intervention groups receiving nutritional supplements and one control group. Body composition was assessed using a Body Composition Analyzer at five time points: pre-surgery examination, admission, and follow-ups weeks 1, 3, and 8. Primary outcome was weight, secondary outcomes included BMI, fat mass, fat-free mass, total body water, and visceral fat rating. Additional data were collected on age, gender, type of surgery, and hospitalization duration.
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Change from baseline in weight in kilogram after orthognatic surgery
Timeframe: From enrollment, (14 days before surgery), to 8 weeks after surgery.