The first image shows the usual appearance of a tooth with the grooves which may sometimes have discolouration or stains. the second shows the same tooth which has had some preparation with air abrasion. Air Abrasion is a micro sandblasting technique. This treatment step has showed up some brown staining which is tooth decay. A pink bacterial stain has been used which will stain areas where bacteria have infiltrated into the tooth. the next shows where we have proceeded to remove this staining to prepare the tooth for a filling and then a completed resin filling.
Results will vary.All invasive procedures carry risks. You should seek a second opinion prior to treatment.