DE10065903A1

DE10065903A1 - Selectively hardenable dental restorative system for directed shrinkage compensation uses one or more components to compensate the polymerization shrinkage of most voluminous component

Info

Publication number: DE10065903A1
Application number: DE10065903A
Authority: DE
Inventors: Karlheinz Moll; Andrei Sommer
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-24
Filing date: 2000-06-24
Publication date: 2002-01-03

Abstract

A selectively hardenable restorative system for directed shrinkage compensation in dental composites, compomers (sic) or Orcomer (RTM) consists of 2 or more mutually-contacting components and acts by having one or more of the components compensating for the shrinkage of the most voluminous component. A selectively hardenable restorative system for directed shrinkage compensation in dental composites, compomers (sic) or Orcomer (RTM) consists of 2 or more mutually-contacting components hardenable by the same or different physical and/or chemical mechanisms and is such that after application of all of the filler components and partial or complete filling of the cavity time-independent hardening of the components is effected such that the volume shrinkage of the most voluminous component is compensated for by one or more other components, the components being compatible and so giving a permanent adhesive bond.

Description

Problemstellung: Ein wesentliches Problem dentaler Komposite, Kompomere, Ormocere ist nach wie vor deren Polymerisationsschrumpfung. Dabei besteht trotz Einsatz moderner Haftvermittler (Bondings) [1], Füllungstechniken [2], Belichtungstechniken zur gerichteten Schrumpfkompensation [3, 4] und/oder Einsatz von Inserts [5] und Lichtinserts [6] die Gefahr der Entstehung von Randspalten im Bereich zwischen dem Füllungsmaterial und den Zahnhartsubstanzen. Die möglichen Folgen derartiger Randspalten sind bakterielle Invasion, Randverfärbungen, Entstehung von Sekundärkaries bis hin zu Schmerzen und Pulpaentzündungen.Problem: An essential problem of dental composites, compomers, Ormocere is still their polymerization shrinkage. There is despite Use of modern bonding agents (bonds) [1], filling techniques [2], Exposure techniques for directional shrinkage compensation [3, 4] and / or use of inserts [5] and light inserts [6] the risk of the formation of marginal gaps in the Area between the filling material and the tooth structure. The possible The consequences of such marginal gaps are bacterial invasion, marginal discoloration, Development of secondary caries up to pain and pulp inflammation.

Die im Patentanspruch dargestellte Erfindung erlaubt eine vorteilhafte und elegante physiko-chemische Realisation einer gerichteten Schrumpfkompensation in viskösen Systemen, und entspricht einer neuen und sinnvollen Lösungsmöglichkeit des obigen Problemkomplexes. Dabei gelingt insbesondere die sinnvolle Verknüpfung der etablierten Schichttechnik mit einer zeitlich steuerbaren Schrumpfkompensation.The invention shown in the claim allows an advantageous and elegant physico-chemical realization of directed shrinkage compensation in viscous Systems, and corresponds to a new and sensible solution to the above Problem complex. In particular, the meaningful combination of established layering technology with time-controllable shrinkage compensation.

Basierend auf der im Patentanspruch dargestellten Erfindung lässt sich eine Lösung obiger Problemstellung idealerweise so realisieren, dass die Zahnkavität zunächst entweder mit einem chemisch härtenden Komposit und/oder Haftvermittlersystem mit Aushärtezeit t₁, oder einem bei der Wellenlänge λ₁ aushärtendem Komposit und/oder Haftvermittlersystem ausgekleidet wird. Die nächste Komponente des selektiv härtenden Systems, von uns SECURAFIL (selectively curable filling) genannt, ist entweder ein chemisch härtendes Komposit mit Aushärtezeit t₂ (t_{2 <} t₁) oder ein bei einer Lichtwellenlänge λ₂ (λ₁≠ λ₂) härtbares lichthärtendes Komposit, derart, dass die zuerst applizierte Komponente erst nach einer Polymerisationskontraktion der Folgekomponente aushärtet.Based on the invention presented in the patent claim, a solution to the above problem can ideally be realized in such a way that the tooth cavity is initially lined either with a chemically curing composite and / or adhesion promoter system with curing time t ₁ , or with a composite and / or adhesion promoter system curing at wavelength λ ₁ becomes. The next component of the selectively curing system, which we call SECURAFIL (selectively curable filling), is either a chemically curing composite with curing time t ₂ (t _{2 <} t ₁ ) or a curable one at a light wavelength λ ₂ (λ ₁ ≠ λ ₂ ) light-curing composite, such that the component applied first cures only after a polymerization contraction of the subsequent component.

Anwendung: Füllung von dentalen Kavitäten bei Mensch und Tier. Application: Filling dental cavities in humans and animals.

Cited sources

[1] K. Moll, B. Haller. Effect of intrinsic and extrinsic moisture on bond strength to dentine. Journal of Oral Rehabilitation, 27; S 149-164 (2000).
[2] J. W. von Dijken, P. Horstedt, R. Waern. Directed polimerization shrinkage versus a horizontal incremental filling technique: Interfacial adaptation in vivo in class II cavities. American Journal of Dentistry, 11 (4); S 165-172 (1998).
[3] A. P. Sommer, M. Gente. Lichtinduzierte Steuerung der Polymerisationsschrumpfung von Dental-Kompositen durch die Erzeugung temporärer Härtegradienten. Biomedizinische Technik, 44 (10); S 290-293 (1999).
[4] M. Gente, A. P. Sommer. Verringerung der linearen Schrumpfung lichthärtbarer Komposite durch selektive Bestrahlung. Deutsche Zahnärztliche Zeitschrift, 11; S 729-731 (1999).
[5] K. J. Donly, T. W. Wild, R. L. Bowen, M. E. Jensen. An in vitro investigation of the effects of glass inserts on the effective composite resin polymerization shrinkage. Journal of Dental Research, 68 (8); S 1234-1237 (1989).
[6] M. Gente, A. P. Sommer. Komponenten für die Herstellung randspaltfreier Füllungen aus lichthärtbaren plastischen Füllungsmaterialien für menschliche Zähne. Patentanmeldung Deutsches Patentamt Nr. DE 198 03 302.8/1998.[1] K. Moll, B. Haller. Effect of intrinsic and extrinsic moisture on bond strength to dentine. Journal of Oral Rehabilitation, 27; S 149-164 (2000).
[2] JW von Dijken, P. Horstedt, R. Waern. Directed polimerization shrinkage versus a horizontal incremental filling technique: Interface adaptation in vivo in class II cavities. American Journal of Dentistry, 11 (4); S 165-172 (1998).
[3] AP Sommer, M. Gente. Light-induced control of the polymerisation shrinkage of dental composites by creating temporary hardness gradients. Biomedical Engineering, 44 (10); S 290-293 (1999).
[4] M. Gente, AP Summer. Reduction of the linear shrinkage of light-curable composites through selective irradiation. German Dental Journal, 11; S 729-731 (1999).
[5] KJ Donly, TW Wild, RL Bowen, ME Jensen. An in vitro investigation of the effects of glass inserts on the effective composite resin polymerization shrinkage. Journal of Dental Research, 68 (8); S 1234-1237 (1989).
[6] M. Gente, AP Summer. Components for the production of fillings free of marginal gaps from light-curable plastic filling materials for human teeth. Patent application German Patent Office No. DE 198 03 302.8 / 1998.

Claims

Selectively curable restoration system for directed shrinkage compensation dental composites, compomers, ormocers consisting of at least two contiguous and according to the same and / or different components that can be hardened by physical and / or chemical mechanisms, characterized in that this only after application of all Filling components and partial or complete filling of the tooth cavity can be brought to harden independently in time, such that the volume shrinkage of the most voluminous component by at least one other component is compensated, the components to that effect are compatible in that they have a permanent adhesive bond with each other received.