Conservative dentistry, a treatment process whereby a minimum of healthy tooth structure is removed during the restorative process, is inherently a desirable dental objective. Natural enamel and natural dentin are still the best dental materials in existence, and thus, minimally invasive procedures that conserve more of the original, healthy tooth structure are preferable.

Endodontics is the branch of dentistry concerning dental pulp and tissues surrounding the roots of a tooth. “Endo” is the Greek word for “inside” and “odont” is Greek for “tooth.” Endodontic treatment, or root canal treatment, treats the soft pulp tissue inside the tooth. An endodontist is a dentist who specializes in saving teeth.

Lack of a tooth can lead to bone athropy. The neighbouring teeth, then, tend to close the empty space by leaning towards each other. So they lose their function, which affects chewing ability. The shape of face is deteriorated, especially when front teeth are missing. This also leads to speech sound disorder. Another function of teeth is to support lips and cheeks, but with teeth missing, a person can look older and more wrinkled as well as face psychological problems like insecurity or lack of self-confidence. However, life is more enjoyable with a beautiful smile. Depending on the number of teeth, their order and condition the restorations can be fixed or removable, or the combination of the two.

A dental implant is a surgical component that interfaces with the bone of the jaw or skull to support a dental prosthesis such as a crown, bridge, denture, facial prosthesis or to act as an orthodontic anchor. The basis for modern dental implants is a biologic process called osseointegration, in which materials such as titanium form an intimate bond to bone. The implant fixture is first placed so that it is likely to osseointegrate, then a dental prosthetic is added. A variable amount of healing time is required for osseointegration before either the dental prosthetic (a tooth, bridge or denture) is attached to the implant or an abutment is placed which will hold a dental prosthetic.

Pediatric dentistry is the branch of dentistry dealing with children from birth through adolescence. Pediatric (also paediatric or pædiatric) dentists promote the dental health of children as well as serve as educational resources for parents. It is recommended by the American Academy of Pediatric Dentistry (AAPD) and the American Academy of Pediatrics (AAP) that a dental visit should occur within six months after the presence of the first tooth or by a child's first birthday. The AAPD has said that it is important to establish a comprehensive and accessible ongoing relationship between the dentist and patient – referring to this as the patient's "dental home". This is because early oral examination aids in the detection of the early stages of tooth decay. Early detection is essential to maintain oral health, modify aberrant habits, and treat as needed and as simply as possible. Additionally, parents are given a program of preventative home care (brushing/flossing/fluorides), a caries risk assessment, information on finger, thumb, and pacifier habits, advice on preventing injuries to the mouth and teeth of children, diet counseling, and information on growth and development.