Parameters affecting retentive force of electroformed double-crown systems

Background: Telescopic double crown restoration can be used as an alternative treatment if the patient wants the tooth to be maintained as long as the supporting tooth has a healthy periodontal. In dental preparation telescopic double crown support requires a preparation guide so that the preparation can be acurate. Minimal preparation can cause the results of the telescopic double crown restoration to be overcontoured, so that the patient may occur uncomfortable, speech disorders and esthetic is not good. Objective: to provide information about the importance teeth preparation guidelines for prosthodontic treatment with telescopic double crown restorations. Case: A 72-year-old female patient, coming to the dentist wants to make dentures so that she can chew food well and improve her appearance. The remaining teeth are only 13 and 23. In making the denture, the patient wants the teeth to be retained (not removed) and the denture is aesthetically good. Case Management: Make a diagnostic wax-up on a semiadjustable articulator to estimate the results of restoration, mould the patient's teeth before starting the preparation with three times putty for the preparation guide and making a temporary crown. the first putty mold is cut mesial-distal right in the middle of the incical teeth, the second putty mould is cut in the labial-palatal direction right in the middle of the tooth mould, the third putty mould is fixed on the stock tray to make the temporary crown. Preparation of teeth 13 and 23 with regard to the putty cut preparation guide, then moulding the maxilla and mandibula with double impressions using an individual tray, after that make the temporary crown directly with the third putty mould. Conclusion: The preparation guide of teeth is very necessary so that the making of telescopic double crown restorations is not overcontoured, so that esthetic and retention can be achieved which are good and do not cause speech disorders.Keywords: Telescopic double crown, tooth preparation guide, estheticCorrespondence: Anindita Apsari. Prostodonsia, Fakultas Kedokteran Gigi, Universitas Hang Tuah, Arief Rahman Hakim 150, Surabaya, Telepon 031-5945864, 5912191, Email: [email protected]

Download Full-text

HARPOCRATES WITH ROYAL ATTRIBUTES AND HARPOCRATES-EROS: EGYPTIAN TERRACOTTA FIGURINES FROM THE COLLECTION OF THE PUSHKIN STATE MUSEUM OF FINE ARTS, MOSCOW

Journal of the Institute of Oriental Studies RAS ◽

10.31696/2618-7302-2020-4-55-69 ◽

2020 ◽

pp. 55-69

Author(s):

Svetlana E. Malykh ◽

◽

Olga A. Vasilyeva ◽

Keyword(s):

Fine Arts ◽

Wide Spread ◽

Royal Power ◽

Bronze Sculpture ◽

Double Crown ◽

State Museum ◽

Roman Egypt ◽

Terracotta Figurines ◽

Museum Of Fine Arts

This article introduces five terracotta figurines acquired in Egypt by Vladimir S. Golenishchev and N. G. Ter-Mikaelyan and currently preserved at the Pushkin State Museum of Fine Arts. Three statuettes depict the child god Harpocrates with the attributes of royal power; two figurines demonstrate the identification of Harpocrates with the Greek god Eros. Most of the objects can be dated mainly to the Roman times, one is to be dated to the late Ptolemaic period. The places of finding or manufacturing of figurines are mostly unknown; however, according to a number of specific features, these could be towns of the Fayum Oasis, the Delta, and in one case — probably, Edfu. Terracotta figurines of Harpocrates with royal regalia are rare, especially in comparison with the wide-spread occurrence of terracottaе with Harpocrates holding a pot or cornucopia; all these data bring his functions as patron of fertility and defender of health to the fore. The presence of royal attributes seems to be a kind of secondary, partly decorative elements that only enhance the most popular aspects of terracotta images of Harpocrates. The type of figurines depicting Harpocrates sitting on a throne with the crown of the god Amun reproduces the iconography of small bronze sculpture. In other types of terracotta the royal attributes most frequently found are the double crown and — rarely — a nemes-headdress; the crown is usually surrounded by lotus buds, a favorite motive of Harpocrates’ iconography. The childish image of Harpocrates in the time of interaction between Eastern and Western cultures led to a natural synthesis of images of the child gods of Egyptian and Graeco-Roman worlds — Harpocrates and Eros. Apparently, such terracottaе, which had more Hellenistic than Egyptian features, were in demand by the population of different towns in Ptolemaic and Roman Egypt.

Download Full-text

Telescopic Denture

The Open Dentistry Journal ◽

10.2174/1874210601812010246 ◽

2018 ◽

Vol 12 (1) ◽

pp. 246-254 ◽

Cited By ~ 2

Author(s):

Mohammad Ayham Hakkoum ◽

Ghassan Wazir

Keyword(s):

Clinical Applications ◽

Double Crown ◽

Different Types

Aim: This article explains the concept of telescopic denture. Procedure: It describes the different types of telescopic attachment (or double crown), and provides an overview of the advantages and the disadvantages of this type of prosthodontic treatment. Conclusion: The indications and the clinical applications of telescopic denture are discussed.

Download Full-text

Gold-Doping of Double-Crown Pd Nanoclusters

Chemistry - A European Journal ◽

10.1002/chem.201704413 ◽

2017 ◽

Vol 23 (72) ◽

pp. 18187-18192 ◽

Cited By ~ 11

Author(s):

Jishi Chen ◽

Liren Liu ◽

Xu Liu ◽

Lingwen Liao ◽

Shengli Zhuang ◽

...

Keyword(s):

Double Crown ◽

Gold Doping

Download Full-text

A biomechanical investigation of the retentive force of pedicle screw structures for different screw tulip designs

Clinical Biomechanics ◽

10.1016/j.clinbiomech.2019.06.003 ◽

2019 ◽

Vol 70 ◽

pp. 23-30

Author(s):

Po-Yi Liu ◽

Po-Liang Lai ◽

Chun-Li Lin

Keyword(s):

Pedicle Screw ◽

Retentive Force ◽

Biomechanical Investigation

Download Full-text

Influence of block-out on retentive force of thermoplastic resin clasps: an in vitro experimental and finite element analysis

Journal of Prosthodontic Research ◽

10.1016/j.jpor.2019.01.002 ◽

2019 ◽

Vol 63 (3) ◽

pp. 303-308 ◽

Cited By ~ 3

Author(s):

Toshiki Yamazaki ◽

Natsuko Murakami ◽

Shizuka Suzuki ◽

Kazuyuki Handa ◽

Masaru Yatabe ◽

...

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Thermoplastic Resin ◽

Element Analysis ◽

Retentive Force

Download Full-text

Periodontal prosthesis on medically compromised patient with few remaining teeth: hybrid telescopic double crown with friction pin method

The Journal of Korean Academy of Prosthodontics ◽

10.4047/jkap.2014.52.4.359 ◽

2014 ◽

Vol 52 (4) ◽

pp. 359 ◽

Cited By ~ 1

Author(s):

Seok-Joon Ha ◽

Cheong-Hee Lee ◽

Jin-Hyun Cho

Keyword(s):

Double Crown

Download Full-text

On a peculiar source of deterioration of the magnetic powers of steel bars

Abstracts of the Papers Communicated to the Royal Society of London ◽

10.1098/rspl.1843.0056 ◽

1851 ◽

Vol 5 ◽

pp. 562-563

Keyword(s):

Magnetic Force ◽

Mechanical Agitation ◽

Retentive Force ◽

Steel Bars

The author concludes, from various experiments on the changes in the magnetic force of steel magnets produced by subjecting them to blows with a wooden mallet, or other modes of creating tremors or vibrations among their particles, that the most apparently trifling mechanical agitation is sufficient to occasion a considerable diminution of magnetic power; that this loss, when it has taken place from such a cause, is permanent; and that in every case, after reaching a certain point, it attains its maximum, a fact which implies, in every magnet, the possession of a specific retentive force, of which it can not be deprived by any further mechanical commotion of its particles. The more highly a bar is magnetized, the more it becomes susceptible of a loss of power by agitation.

Download Full-text