Toothpaste is the most widely used preventive tool in dentistry, and most of what it does depends on a handful of ingredients that work in a deliberate sequence: the abrasives scrub away the pellicle and the stain, the fluoride strengthens the enamel against the next acid attack, and the detergen...

The esthetic restoration that fails does not fail in the laboratory; it fails at the moment of shade selection, when the eye and the shade guide come to a hasty and ill-lit agreement. Shade matching is the disciplined gathering of color information under controlled conditions before the impressio...

The provisional crown is the working model for the finished restoration, protecting the prepared tooth, holding the position of the gingiva and the occlusion, and telling the patient exactly what the permanent crown will feel like. It is too often treated as a placeholder, something quickly press...

The occlusal night guard is a rigid or semi-rigid appliance that sits between the upper and lower teeth during sleep, and it is the first line of defense against the destruction of bruxism. It does not stop the grinding, and no appliance does, but it absorbs the force, protects the enamel and the...

Four-handed dentistry is a team-based method in which the seated dentist and the seated assistant work together around the patient, each performing the tasks they are best suited for, so that instruments, materials, and suction are always ready at the moment they are needed. The system, formalize...

Dental radiographs are among the safest and most useful investigations in clinical medicine, yet they deliver ionizing radiation to living tissue, and the responsible practice is the one that keeps that dose as low as reasonably achievable. This principle, known as ALARA, governs every decision a...

Magnification has become an indispensable tool in contemporary dentistry, turning the margin of a preparation, the entrance of a canal, and the surface of a restoration into a landscape the eye can actually read. The choice, however, is not simply more magnification, because every increase in pow...

The cement that holds a crown, a bridge, or an inlay is the smallest component of the restoration and often the first to fail, and its choice sits on a quiet triad: the material of the restoration, the condition of the tooth, and the demands of the cement itself. The modern cabinet holds water-ba...

The composite resin has replaced amalgam as the default filling material of the modern practice, and its versatility comes from a tunable recipe of two components: the resin matrix that binds the material and the glass or ceramic filler that gives it strength and polish. Because the manufacturer ...

The removal of supra- and subgingival biofilm is the foundation of periodontal therapy, and the ultrasonic scaler has become the instrument of choice for much of this work. A mechanical tip vibrating at high frequency, energized by an oscillating water spray, disrupts the biofilm, chips away the ...

Teledentistry uses telecommunication technology to provide dental care at a distance, allowing the clinician to assess a patient, triage an emergency, plan a case, or monitor a course of treatment without a physical visit. The idea is not new, but the pandemic of 2020 accelerated its adoption and...

A white spot lesion is the earliest clinically visible stage of caries, a subsurface demineralization that still can be reversed if the environment of the mouth is changed. Remineralization restores mineral into the damaged enamel and is the treatment of choice before a lesion reaches the cavitat...

Photobiomodulation, once called low-level laser therapy, uses red or near-infrared light at doses that do not heat the tissue to modulate cellular activity and promote healing. In dentistry the therapy has moved from a curiosity to a documented adjunct for pain, inflammation, and wound recovery, ...

Repair of a periodontal defect closes the pocket but leaves a long junctional epithelium as a fragile scar, while true regeneration restores the cementum, periodontal ligament, and bone that the disease destroyed. Enamel matrix derivative, marketed as Emdogain, is a purified extract of developing...

Conventional implant site preparation removes bone with cutting drills that sacrifice the very tissue the implant relies on for stability. Osseodensification, introduced by Huwais and Meyer in 2017, reverses this logic by using a specially designed bur that compacts and densifies the bone walls o...

An implant overdenture is a removable prosthesis retained by two or more implants, and it converts the unstable conventional denture into a chewing platform that the patient trusts. Between the implant and the denture sits the attachment, the small mechanical or magnetic connector that holds the ...

The removal of biofilm is the oldest task in dentistry, yet conventional polishing with a rubber cup and paste still scrubs the surface, leaves the deep pockets untouched, and often produces a spray of aerosolized bacteria. Guided biofilm therapy changes this by first staining the biofilm so that...

Conventional caries excavation removes soft dentin with rotary burs and hand instruments, but it also removes sound tissue and often leaves the patient anxious and the clinician pressing with unnecessary force. Chemomechanical caries removal offers a gentler path: a chemical agent softens the inf...

Bell's palsy is an acute, usually unilateral paralysis of the facial nerve that is not caused by an identifiable tumor, trauma, or infection, and it presents to the dental team as a sudden inability to close the eye, smile, or raise the eyebrow on one side. Because the paralysis affects structure...

A narrow alveolar ridge is one of the commonest obstacles to implant placement, and ridge splitting offers an elegant alternative to lengthy guided bone regeneration. The technique divides the deficient ridge into two cortical plates, expands them apart, and places an implant in the gap, so that ...

The inferior alveolar nerve block is the workhorse of mandibular anesthesia, yet it is the injection that fails most often in everyday practice. When the tooth still responds to cold and the patient still feels pain, the clinician faces a familiar dilemma: repeat the block, switch to another tech...