The future European standard to determine odour in ambient air by using field inspection.

This paper presents the methodologies to determine odour in ambient air by field inspection that will be a new European standard. The objective is to characterise the odour in a defined area. Without making a link with potential annoyance due to the presence of odours, the described methods propose the way to characterise an exposed environment.

Combined surgical procedures to correct facial deformities.

Combined maxillary-mandibular surgical procedures to correct facial deformities raise problems not usually seem when correction is limited to one arch. When multiple procedures are contemplated, it is easy to lose the relationship of theocclusion to the proposed facial contour. Model surgery is the key to determining the correct surgical site.