The ideal mandibular angle and the chin are mainly dependent on the boney framework, the mandible. The bone is then wrapped over by other soft tissue like muscle, fat, salivary gland, skin etc. each of these structures can contribute to the shape of the jawline and the angle. But let us start with talking about the bone. One can be born with a perfectly ideal jaw structure, but some may be born with a small jaw bone, chin which is small and set back in protrusion, further
Bone resorbs as one age making it smaller.
Fillers or volume enhancers can take care of this beautifully. At RA, Dr Rashmi Shetty designs the jaw keeping in mind the likes, the rest of the facial esthetics and the sex of the patient.