Pronunciation: [dɪkˈe͡ɪd tˈuːθ] (IPA) 
The spelling of the word "decayed tooth" follows the usual English spelling conventions. The word starts with the letter "d," which is pronounced as /d/ in IPA phonetic transcription. Next, the dipthong "ei" is spelled with the combination of the letters "e" and "a," making the sound , /deɪ/. Finally, the combination "cay" represents the sound /keɪ/. Overall, "decayed tooth" is spelled phonetically as /dɪˈkeɪd tuθ/.
A decayed tooth, also known as a dental caries or tooth decay, refers to a pathological condition characterized by the progressive destruction of the structure and integrity of a tooth. It is a common dental ailment resulting from the demineralization of the tooth's hard tissues, namely the enamel, dentin, and cementum. Tooth decay typically occurs due to the presence of bacteria in the oral cavity, particularly Streptococcus mutans, which produce acids by metabolizing sugars and fermentable carbohydrates. The acids erode the protective layer of the tooth, the enamel, leading to the formation of cavities or holes.
Symptoms of a decayed tooth may include toothache, sensitivity to hot or cold foods and drinks, discoloration or staining of the affected tooth, bad breath, and visible pits or holes in the tooth surface. If left untreated, a decayed tooth can progress to involve the deeper layers, such as the dentin and pulp, leading to severe pain, dental abscesses, and potential tooth loss.
Treatment options for a decayed tooth depend on the extent of the damage. In early stages, the decayed portion of the tooth can be removed and filled with dental material, such as composite resin or amalgam, in a procedure known as a dental filling. Advanced cases may require a root canal procedure, in which the infected pulp is removed, and the tooth is sealed and protected with a dental crown. In extreme cases where the tooth is beyond repair, extraction may be necessary as a last resort. Maintaining proper oral hygiene, regular dental check-ups, and a balanced diet low in sugary foods are vital in preventing decayed teeth.
The word "decayed tooth" is a combination of two words: "decayed" and "tooth".
The word "decayed" comes from the Middle English word "decayen", which originated from the Old French word "decair" and ultimately from the Latin word "decadere". "Decayen" referred to the gradual deterioration or decline of something.
The word "tooth" comes from the Old English word "tōþ", which has Germanic and Indo-European origins. This word has been used for centuries to refer to the hard, bonelike structures found in the mouth that are used for chewing.
