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Evaluation of temporary crowns made by conventional and 3D printed materials: Randomized clinical trial

Evaluation of implant-retained temporary crowns made by conventional and 3D printed materials: Randomized clinical trial

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-4msyxn
Enrollment
Unknown
Registered
2019-12-12
Start date
2019-11-19
Completion date
Unknown
Last updated
2025-10-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Loss of teeth due to accident, extraction or localized periodontal diseases

Interventions

Procedure/surgery
Group 1: Analog Flow As temporary unit crowns on implants performed directly in the analog flow, they will be made using the technique that uses a stock tooth (Biotone IPN - Dentsply) with the additio

Sponsors

Universidade Federal de Pelotas
Lead Sponsor
Universidade Federal de Pelotas
Collaborator

Eligibility

Inclusion criteria

Inclusion criteria: To be included in the sample, patients will need to have the following characteristics: Having previously performed the installation of dental implants, which are considered osseointegrated, thus enabling the manufacture of prostheses on the implants; Have indication of making a temporary cemented crown on the implant using prosthetic component of the trunnion type; Have good general health, which allows dental treatment; Have time and time available to attend dental appointments at the institution.

Exclusion criteria

Exclusion criteria: Patients with any of the following characteristics may not be part of the sample: Patient with any systemic disease that prevents dental treatment; Patients who do not have time available for care in educational institutions.

Design outcomes

Primary

MeasureTime frame
The surface roughness of the temporary crowns of the different groups will be evaluated on the day of the temporary crown installation (T0) and on the day of the permanent prosthesis installation (TP). For this, a roughness meter (SJ-201; Mitutoyo, Tokyo, Japan) with a resolution of 0.01µm at room temperature will be used. Five readings will be taken for each specimen and the roughness value (Ra, µm) will be determined from the arithmetic mean between the five measurements.;The color stability of the temporary crowns of the different groups will be evaluated on the day of the temporary crown installation (T0) and on the day of the permanent prosthesis installation (TP). Evaluations will be performed using the VITA Easyshade spectrophotometer (VITA Zahnfabrik, Germany) Considering the L*a*b* color coordinates proposed by the CIE (Commission Internationale de l'Eclairage). The values obtained for the coordinates L*a*b* will be measured 3 times for each temporary crown at the different evaluation times (T0 and TP). The calculation of color variation between the 2 color measurements (T0 and TP) will be performed behind the standard formula of the CIE Lab model.

Secondary

MeasureTime frame
Any biological changes (IPV-Visible Plaque Index; ISG-Gingival Bleeding Index; and Probing Depth) of temporary single crowns made by analog and digital flow will be performed by peri-implant clinical examination.;Regarding the conditions of the temporary crown the criteria proposed by Hickel et al. will serve as a basis for assessing possible aesthetic and functional changes.;The patient's opinion regarding the type of treatment received will also be considered through the satisfaction assessment by visual analog scale (VAS) related to the aspects: aesthetics, phonetic, chewing and comfort.

Countries

Brazil

Contacts

Public ContactMateus dos Santos

Universidade Federal de Pelotas

mateusbertolini@yahoo.com.br+55-053-999349134

Outcome results

None listed

Source: REBEC (via WHO ICTRP)