Endodontist is dentist who specialize and limit their practice to root canal treatment and root canal surgery, and use their special training and experience in treating difficult cases that are referred to them by general dentists who opt not to perform these cases, such as teeth with narrow or blocked canals, or unusual anatomy.

Orthodontics is a specialty of dentistry that is concerned with the study and treatment of malocclusion (improper bites), which may be a result of tooth irregularity, disproportionate jaw relationships, or both. Orthodontic treatment can focus on dental (teeth) displacement only, or can deal with the control and modification of facial growth. In the latter case it is better defined as "dentofacial orthopedics". Orthodontic treatment can be carried out for purely aesthetic reasons—improving the general appearance of patients' teeth and face for cosmetic reasons—but treatment is often prescribed for practical reasons, providing the patient with a functionally improved bite (occlusion).

A Periodontist is a dentist who specializes in the diagnosis and surgical and non-surgical treatment of diseases and conditions of the periodontium. Periodontists are experts in the management of patients with periodontal diseases including all forms of gingivitis, periodontitis and gingival recession (gum recession).

An oral and maxillofacial surgeon is a regional specialist surgeon treating the entire craniomaxillofacial complex:
anatomical area of the mouth, jaws, face, skull, as well as associated structures.

Pedodontist (or Pediatric Dentistry): is a Dental specialist for children

A prosthodontist is a dentist who specializes in prosthodontics, the specialty of implant, esthetic and reconstructive dentistry. Prosthodontists specialize in the restoration of oral function by creating prostheses and restorations (i.e., complete dentures, crowns, implant retained/supported restorations). Cosmetic dentistry, implants and temporomandibular joint disorder all fall under the field of prosthodontics.