The difference is about what each procedure targets during nonsurgical periodontal cleaning. Scaling removes calculus and biofilm from the tooth surfaces, both above and below the gumline. Root planing goes deeper to debride and smooth the root surfaces, removing toxins and irregularities so the root is clean and smooth to promote healing and reattachment of the gum tissue. Lasers aren’t part of standard root planing. So, the best description is that scaling clears deposits on the tooth surfaces, while root planing prepares the root surface itself for healing by smoothing it.

In dental hygiene ethics, the foundation rests on respecting patients’ choice and rights, avoiding harm, and promoting their well-being. The best choice reflects these three guiding principles: autonomy, nonmaleficence, and beneficence. Autonomy means honoring a patient’s right to be informed and to make their own decisions about treatment, including understanding options and consequences. Nonmaleficence is the obligation to do no harm and to minimize potential harm from care. Beneficence involves actively contributing to the patient’s welfare by providing beneficial treatments and education that improve health. Truthfulness, confidentiality, and justice are also important in practice, but they are not grouped here as the three core principles typically emphasized together. Truthfulness relates to honesty in communication, confidentiality protects patient information, and justice concerns fair and equitable treatment. The trio of autonomy, nonmaleficence, and beneficence best captures the central ethical duties directly guiding patient-centered care in dental hygiene.

Endogenous stains are intrinsic discolorations that come from within the tooth structure, usually during development, making them resistant to surface cleaning. Tetracycline staining is a classic example because tetracycline antibiotics can become incorporated into the enamel and dentin while teeth are forming (in utero or early childhood). The color change is inside the tooth and can appear yellow, brown, or gray with possible banding corresponding to developmental stages; since the pigment is internal, routine brushing won’t remove it and cosmetic treatments like whitening or veneers are often needed. In contrast, stains from coffee, tea, and red wine are surface stains. They come from pigments that adhere to the outer enamel (extrinsic stains) and are generally removable with cleaning or whitening.

The main idea is that prophylaxis paste is used during the polishing step of a professional cleaning to remove surface stains and biofilm from tooth surfaces. Its mild abrasive particles help scrub away extrinsic stains and smooth the enamel, making plaque less likely to cling and giving teeth a cleaner, shinier appearance. Whitening intrinsic discoloration isn’t the primary goal of this paste; true whitening involves agents that change tooth color more deeply, not just surface polish. Sealing fissures is done with fissure sealants, and desensitizing dentin uses different agents, so those aren’t the purposes of prophylaxis paste.