Height of curvature

Height of curvature in the tooth can be defined as the line encircling a tooth at its greatest bulge to a selected path of insertion. The height of curvature is the same as the height of contour.

Significance

The buccal and lingual contours of a tooth are important in determining the angle at which food is deflected from a tooth surface. If food is deflected too much, some of the gingiva would not have the right amount of stimulation. On the other hand, if food is deflected too little, some of it would be forced into the space which separates the tooth from the gingiva. Consequences of this could be inflammation of the gingiva or periodontal disease. [1]

In young people the buccal and lingual curvatures lie below the gum as the teeth have not fully erupted. However, as tooth eruption progresses, the curvature is easier to see.

The shape of the crown of a tooth helps to prevent periodontal disease. It does this by allowing food to be deflected onto the gums at a specific angle so that the gum tissue can be stimulated and cleaned. Each tooth is shaped so that food is directed off the tooth and onto the gums instead. The shape of the tooth is also designed specifically for its function and to allow for its self-cleaning ability. [1]

The proximal contact areas formed mesially and distally by the height of contour are important in maintaining tooth position and stability, preventing rotation and drift.

Locations of height of curvature

For the outer (facial) surfaces of all teeth, the height of curvature is located in the cervical third of the teeth. In the inner (lingual) surfaces of anterior teeth, both upper and lower, the height of curvature is also located in the cervical third of the tooth, on the cingulum. In the posterior teeth, both in upper and lower jaw, the lingual height of contour is found at the middle third of the inner surface of the tooth. The lower second premolar proposes an exception as its height of curvature in inner surface is located in the occlusal third of the inner surface. In addition, the curvature of CEJ is more pronounced on the interproximal aspect than the buccal aspect of tooth. Therefore the measurement of CAL becomes compromised on the interproximal aspect.[2]

Functions

The height of contours have great functions to oral cavity

  1. They allow the food to be deflected allowing proper degree of massage to the gingiva
  2. They prevent the food of being accumulated at the tooth
  3. Holding the gingiva under definite tension
  4. Protection of the gingiva surrounding the tooth
  5. Formation of a contact point between teeth, where the mesial and distal surfaces of adjacent teeth meet

The height of contour must be replicated in restorative dental work to serve the functions that a natural contour would provide. [3]

Mal-developed height of curvature

In case of under-developed curvature, gingival recession may result. In case of overdeveloped curvature, food will accumulate and there will be no massage to the gingiva and chronic inflammation may result.

References

  1. ^ a b Brand RW, Isselhard DE (2014-03-12). Anatomy of Orofacial Structures - Enhanced 7th Edition - E-Book: A Comprehensive Approach. Elsevier Health Sciences. ISBN 9780323227728.
  2. ^ Vandana KL, Haneet RK (September 2014). "Cementoenamel junction: An insight". Journal of Indian Society of Periodontology. 18 (5): 549–54. doi:10.4103/0972-124X.142437. PMC 4239741. PMID 25425813.
  3. ^ Yuodelis RA, Weaver JD, Sapkos S (January 1973). "Facial and lingual contours of artificial complete crown restorations and their effects on the periodontium". The Journal of Prosthetic Dentistry. 29 (1): 61–6. doi:10.1016/0022-3913(73)90140-6. PMID 4564800.

Read other articles:

Babun hamadria

Babun hamadria[1] Papio hamadryas Babun hamadria jantan di Pegunungan Hijaz di dekat Ta'if, Arab SaudiBabun hamadria betina di Taman Nasional Awash, EtiopiaStatus konservasiRisiko rendahIUCN16019 TaksonomiKerajaanAnimaliaFilumChordataKelasMammaliaOrdoPrimatesFamiliCercopithecidaeGenusPapioSpesiesPapio hamadryas (Linnaeus, 1758) Tata namaSinonim taksonSimia hamadryas Linnaeus, 1758ProtonimSimia hamadryas Distribusi lbs Babun hamadria (Papio hamadryas) adalah spesies babun yang ber...

 

Pollution

Les premières grandes pollutions semblent avoir été induites par la révolution industrielle, permise par les machines à vapeur et le charbon. Cheminées industrielles, par Eugen Bracht (1842–1921), tableau daté de 1905. Fumées industrielles généralement chargées de résidus de combustion. La pollution est la destruction ou dégradation d'un écosystème ou de la biosphère par l'introduction, généralement humaine, d'entités (physiques, chimiques ou biologiques), ou de radiation...

 

Denny Landzaat

Denny Landzaat Informasi pribadiNama lengkap Denny Domingues LandzaatTanggal lahir 6 Mei 1976 (umur 47)Tempat lahir Amsterdam, BelandaTinggi 178 m (584 ft 0 in)Posisi bermain Gelandang bertahan / Gelandang tengahInformasi klubKlub saat ini Lech Poznań (asisten)Karier junior SC Buitenveldert AjaxKarier senior*Tahun Tim Tampil (Gol)1995–1996 Ajax 1 (0)1996–1999 MVV 102 (10)1999–2003 Willem II 139 (38)2003–2006 AZ 79 (22)2006–2008 Wigan Athletic 52 (5)2008–2010 ...

العلاقات الإسرائيلية الباهاماسية

العلاقات الإسرائيلية الباهاماسية إسرائيل باهاماس   إسرائيل   باهاماس تعديل مصدري - تعديل   العلاقات الإسرائيلية الباهاماسية هي العلاقات الثنائية التي تجمع بين إسرائيل وباهاماس.[1][2][3][4][5] مقارنة بين البلدين هذه مقارنة عامة ومرجعية للدولت�...

 

Stechinelli

Questa voce o sezione sugli argomenti politici italiani e imprenditori italiani non cita le fonti necessarie o quelle presenti sono insufficienti. Puoi migliorare questa voce aggiungendo citazioni da fonti attendibili secondo le linee guida sull'uso delle fonti. Segui i suggerimenti dei progetti di riferimento 1, 2. Ritratto di Francesco Maria Capellini Stechinelli, pseudonimo di Francesco Maria Capellini (Rimini, 18 aprile 1640 – Celle, 26 novembre 1694), è stato un politico, banchi...

 

Indiana's 10th congressional district

Former U.S. House district from 1843 to 2003 Indiana's 10th congressional districtObsolete districtCreated1840Eliminated2000Years active1843–2003 Indiana's 10th congressional district was a congressional district for the United States House of Representatives in Indiana. It encompassed roughly the Old City Limits of Indianapolis from 1983–2003. The district was re-drawn after the 1980 census and eliminated when Indiana's representation in the House of Representatives fell from 10 to n...

Natasha Romanoff

Disambiguazione – Se stai cercando il personaggio del Marvel Cinematic Universe, vedi Natasha Romanoff (Marvel Cinematic Universe). Natasha RomanoffVedova Nera, disegnata da Greg Land UniversoUniverso Marvel Lingua orig.Inglese AutoriStan Lee Don Rico Don Heck EditoreMarvel Comics 1ª app.Aprile 1964 1ª app. inTales of Suspense (vol. 1[1]) n. 52 Editore it.Editoriale Corno 1ª app. it.9 settembre 1971 1ª app. it. inL'incredibile Devil n. 36 Caratteristiche im...

 

Exposición internacional

Expo 2005 Aichi (Japón), Comunidad global 6 (Países de Asia Pacífico) Se conoce formalmente como exposición internacional a los eventos acreditados por la Oficina Internacional de Exposiciones (BIE), de acuerdo con las definiciones, objetivos y reglas que establece la Convención relativa a las Exposiciones Internacionales. Definición y objetivos de las exposiciones internacionales Expo 2008 Zaragoza (España), Zona de participantes internacionales oficiales. De acuerdo con el artículo ...

 

莎拉·阿什頓-西里洛

莎拉·阿什頓-西里洛2023年8月，阿什頓-西里洛穿著軍服出生 (1977-07-09) 1977年7月9日（46歲） 美國佛羅里達州国籍 美國别名莎拉·阿什頓（Sarah Ashton）莎拉·西里洛（Sarah Cirillo）金髮女郎（Blonde）职业記者、活動家、政治活動家和候選人、軍醫活跃时期2020年—雇主內華達州共和黨候選人（2020年）《Political.tips》（2020年—）《LGBTQ國度》（2022年3月—2022年10月）烏克蘭媒�...

Benzodiazepine

Le informazioni riportate non sono consigli medici e potrebbero non essere accurate. I contenuti hanno solo fine illustrativo e non sostituiscono il parere medico: leggi le avvertenze. Struttura base delle benzodiazepine Le benzodiazepine (spesso abbreviate BZD o BDZ) sono una classe di psicofarmaci la cui struttura chimica è composta dalla fusione di un anello benzenico e un anello diazepinico. La prima benzodiazepina, il clordiazepossido (Librium), è stata scoperta casualmente da Leo Ste...

 

A Drive into the Blue

1919 film A Drive into the BlueDirected byRudolf BiebrachWritten byAlfred Halm Hanns Kräly Robert WieneProduced byPaul DavidsonStarringHenny Porten Georg Alexander Jakob TiedtkeCinematographyWilly GaebelMusic byGiuseppe BecceProductioncompaniesMesster Film PAGUDistributed byUFARelease date 21 November 1919 (1919-11-21) CountryGermanyLanguagesSilent German intertitles A Drive into the Blue (German: Die Fahrt ins Blaue) is a 1919 German silent comedy film directed by Rudolf Bieb...

 

Sperone

SperoneKomuneComune di SperoneLokasi Sperone di Provinsi AvellinoNegaraItaliaWilayah CampaniaProvinsiAvellino (AV)Luas[1] • Total4,7 km2 (1,8 sq mi)Ketinggian[2]190 m (620 ft)Populasi (2016)[3] • Total3.655 • Kepadatan780/km2 (2,000/sq mi)Zona waktuUTC+1 (CET) • Musim panas (DST)UTC+2 (CEST)Kode pos83020Kode area telepon081Situs webhttp://www.comune.sperone.av.it Sperone adalah sebuah ko...

1982 Derby City Council election

1982 UK local government election 1982 Derby City Council election[1][2] ← 1980 6 May 1982 1983 → 15 of the 44 seats in the Derby City Council23 seats needed for a majority   First party Second party   Party Labour Conservative Last election 26 18 Seats before 27 17 Seats won 9 6 Seats after 27 17 Seat change Popular vote 17,229 19,254 Percentage 34.8% 38.9% Map showing the results of the 1982 Derby City Council ele...

 

2016 Subic local elections

This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources.Find sources: 2016 Subic local elections – news · newspapers · books · scholar · JSTOR (August 2022) 2016 Subic local elections ← 2013 May 9, 2016 2019 →   Nominee Jay Khonghun Rolando Ampunin Heber Bascon Party SZP PDP–Laban Independen...

 

Weather satellite

Type of satellite designed to record the state of the Earth's atmosphere Not to be confused with Atmospheric satellite. GOES-16, a United States weather satellite of the meteorological-satellite service A weather satellite or meteorological satellite is a type of Earth observation satellite that is primarily used to monitor the weather and climate of the Earth. Satellites can be polar orbiting (covering the entire Earth asynchronously), or geostationary (hovering over the same spot on the equ...

V

Disambiguazione – Se stai cercando altri significati, vedi V (disambigua). Questa voce o sezione sull'argomento grafemi non cita le fonti necessarie o quelle presenti sono insufficienti. Puoi migliorare questa voce aggiungendo citazioni da fonti attendibili secondo le linee guida sull'uso delle fonti. V vlettera dell'alfabeto latinoV in caratteri senza e con grazie V in corsivo Alfabeto NATOVictor Codice Morse···– Bandiera marittima Alfabeto semaforico Braille ⠧ La V o v (chiam...

 

Bashofu

Kimono dari bashofu Bashofu (芭蕉布 / Bahasa Okinawa: baashaa, baashaajin) adalah kain tradisional asal Okinawa yang dibuat dari serat pohon pisang. Awal mula dan perkembangan Proses pembuatan bashofu, sebelum perang. Bashofu dibuat dari jenis pisang itobasho (Musa liukinensis), yang berbeda dari pohon pisang yang buahnya diambil untuk dimakan.[1] Itobasho tumbuh merata di daerah hangat di Kepulauan Ryukyu dan telah sejak lama dimanfaatkan sebagai bahan pakaian. Terdapat beberapa c...

 

Sarashina Nikki

Sarashina Nikki de Takasue's Daughter Género Literatura de viajes y nikki bungaku Tema(s) Viaje Idioma Japonés clásico Título original 更級日記 País Japón [editar datos en Wikidata] El Diario de Sarashina ( 更 级 日记, Sarashina Nikki?) es un libro de memorias escrito en el siglo XI por Sugawara no Takasue no musume, dama de compañía del periodo Heian en Japón. Contenido y autoría La obra destaca por las descripciones de los viajes y peregrinaciones que r...

Miles Davis at Newport 1955–1975: The Bootleg Series Vol. 4

2015 live album by Miles DavisMiles Davis at Newport 1955–1975: The Bootleg Series Vol. 4Live album by Miles DavisReleasedJuly 17, 2015 (2015-07-17)RecordedJuly 17, 1955 (1955-07-17)July 3, 1958 (1958-07-03)July 4, 1966 (1966-07-04)July 2, 1967 (1967-07-02)July 5, 1969 (1969-07-05)October 22, 1971 (1971-10-22)November 1, 1973 (1973-11-01)July 1, 1975 ...

 

Magnavox Odyssey²

Magnavox Odyssey² Разработчик Magnavox Производитель Magnavox / Philips Семейство Серия Magnavox Odyssey Тип Игровая приставка Поколение Второе Выпуск Дата выхода 1978 г. 1982 г. Стоимость на старте продаж 179 $ Поддержка прекращена 20 марта 1984 Продано штук 2 миллиона Аппаратное обеспечение Носит...