Which of the following methods is not routinely used in initial periodontal therapy

Initial periodontal therapy deals primarily with control of periodontal infection. This includes active removal of plaque and calculus, and control of host factors to modulate the patient’s response to future bacteria and buildup. This involves non-surgical therapy, hygiene instruction, adjusting restorations and other 

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Oral and maxillofacial surgeons are chiefly involved in the correction of oral and maxillofacial disease and dysfunction requiring extreme intervention. This can include a wide variety of procedures, but generally do not include restorative procedures such as crowns or dentures, or procedures dealing with the brain, eyes, or ears.

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Orthodontic treatment is concerned with not only esthetic correction to crowded or spaced teeth, but also with controlling dental and skeletal disharmony that interfere with mastication and speech. They can include expanding the jaws or promoting their full growth potential as well as adjusting the spacing and positioning of the teeth.

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Periodontal and prosthetic surgery are used in combination for restoration of complicated dental cases. They can be used to replace missing teeth and restore decayed or compromised teeth, as well as to augment gum and bone to create a new balance between all aspects of the oral cavity.

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Root canal therapy involves accessing all root canals in a tooth, cleaning and shaping the canals, disinfecting the space, and filling the canals with biocompatible material that seals them against future infection. It is not possible, however, to see the microbes during this process