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单词 periodontal
释义

periodontaladj.

Brit. /ˌpɛrɪəˈdɒntl/, U.S. /ˌpɛrioʊˈdɑn(t)l/
Origin: Formed within English, by derivation. Etymons: peri- prefix, odonto- comb. form, -al suffix1.
Etymology: < peri- prefix + odonto- comb. form + -al suffix1. Compare slightly later peridental adj. at peri- prefix 2a.
Anatomy and Dentistry.
Situated or occurring around a tooth; of, relating to, or designating the tissues that surround and support the teeth. Cf. peridental adj. at peri- prefix 2a.
ΘΚΠ
the world > life > the body > digestive or excretive organs > digestive organs > mouth > substance or parts of teeth > [adjective] > membrane
periodontal1854
peridental1859
periodontic1926
1854 Jrnl. Royal Agric. Soc. 15 308 The periodontal covering to the tooth.
1867 Quain's Elem. Anat. II. 791 Minute radiated ramifications..are often found to proceed from one side only of a cell, towards the periodontal surface.
1934 Times Educ. Suppl. 3 Feb. 36/3 A deficiency of vitamin A or carotene played an important part in the development of the periodontal tissues and in the control of the onset of periodontal disease.
1994 Successful Retirement Sept. 27/2 Those 51 and over could stand to benefit from more to counteract osteoporosis..or periodontal disease.

Compounds

periodontal ligament n. the layer of connective tissue that attaches the root of a tooth to its alveolus (socket).
ΚΠ
1962 Oral Surg., Oral Med., Oral Pathol. 15 785 (title) The prevalence, morphology, and distribution of epithelial rests in the human periodontal ligament.
1975 J. D. Manson Periodontics (ed. 3) xviii. 222 Orban and Weinmann (1942) coined the term ‘periodontosis’ believing that the condition represented a degeneration of the periodontal ligament. However, there is no evidence for that belief.
2002 Microsc. Res. & Technique 59 449 Mammalian periodontia are characterized by a gomphosis, an attachment of the tooth root in the alveolar bone socket via periodontal ligament fibers.
periodontal membrane n. now rare the periodontal ligament.
ΚΠ
1890 J. S. Billings National Med. Dict. II. 314/1 Periodontal membrane, periosteum of alveolus of tooth.
1899 T. C. Allbutt et al. Syst. Med. VI. 743 Inflammation of the periodontal membrane.
1953 I. Glickman Clin. Periodontol. xxxvii. 609 The term ‘reattachment’ is to be used here to connote the restoration of gingival contour effected by the re-embedding of the periodontal membrane into newly formed cementum.

Derivatives

perioˈdontally adv. with regard to periodontal tissue.
ΘΚΠ
the world > life > the body > digestive or excretive organs > digestive organs > mouth > substance or parts of teeth > [adverb] > membranes
periodontally1955
1955 J. Osborne Dental Mech. (ed. 4) ix. 148 Periodontally diseased teeth.
2002 Jrnl. Amer. Vet. Med. Assoc. 220 775 Root canal treatment offers a viable option for salvage of periodontally sound but endodontically diseased teeth.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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adj.1854
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