DOCTORAL DISSERTATION ON SUBCRESTAL IMPLANT PLACEMENT: ANALYSIS OF MARGINAL BONE LEVELS RELATED TO SURGICAL AND PROSTHETIC FACTORS
type: CreativeWork
description: ABSTRACT BACKGROUND: The subcrestal placement of dental implants is becoming increasingly common. Modern biomedical devices with features to make them employable in such a manner have been developed to reduce the implant exposure within the oral environment. Indeed, it is universally recognized that, after placement, dental implants undergo a process of bone remodeling that has the greatest clinical impact at the level of the bony ridge. The exposure of the implant surface into the oral environment is potentially harmful because the accumulation of bacterial plaque on such surfaces can trigger inflammatory processes that, over time, may potentially lead to the loss of the implant itself. Subcrestal placement is based on the rationale that, provided a certain amount of crestal bone resorption cannot be avoided, this phenomenon remains superficially confined. According to this, the implant remains integrally within the bone envelope. Nevertheless, not all commercially available implant systems can be used in such a manner. Moreover, there are only a few clinical studies with short-to-medium-term follow-up in the literature. The primary outcome of this thesis is to investigate the prosthetic and surgical factors that may influence MBL of dental implants designed to be placed subcrestally. OBJECTIVES: General objectives of this thesis are: to present the clinical validation of subcrestal implants and to identify surgical and prosthetic factors that may affect MBL. Secondarily, the relationship between subcrestal placement and peri-implant biometric parameters is evaluated. Specific objectives of each study: (I.) To retrospectively evaluate 410 subcrestal dental implants placed in 93 patients in order to identify potential factors associated with MBL variation by multiple linear regression analysis. (II.) To investigate a possible correlation between the prosthetic emergence angle (EA) (greater or less than 30 degrees) of fixed rehabilitations screwed onto subcrestal imp…
abstract: ABSTRACT BACKGROUND: The subcrestal placement of dental implants is becoming increasingly common. Modern biomedical devices with features to make them employable in such a manner have been developed to reduce the implant exposure within the oral environment. Indeed, it is universally recognized that, after placement, dental implants undergo a process of bone remodeling that has the greatest clinical impact at the level of the bony ridge. The exposure of the implant surface into the oral environment is potentially harmful because the accumulation of bacterial plaque on such surfaces can trigger inflammatory processes that, over time, may potentially lead to the loss of the implant itself. Subcrestal placement is based on the rationale that, provided a certain amount of crestal bone resorption cannot be avoided, this phenomenon remains superficially confined. According to this, the implant remains integrally within the bone envelope. Nevertheless, not all commercially available implant systems can be used in such a manner. Moreover, there are only a few clinical studies with short-to-medium-term follow-up in the literature. The primary outcome of this thesis is to investigate the prosthetic and surgical factors that may influence MBL of dental implants designed to be placed subcrestally. OBJECTIVES: General objectives of this thesis are: to present the clinical validation of subcrestal implants and to identify surgical and prosthetic factors that may affect MBL. Secondarily, the relationship between subcrestal placement and peri-implant biometric parameters is evaluated. Specific objectives of each study: (I.) To retrospectively evaluate 410 subcrestal dental implants placed in 93 patients in order to identify potential factors associated with MBL variation by multiple linear regression analysis. (II.) To investigate a possible correlation between the prosthetic emergence angle (EA) (greater or less than 30 degrees) of fixed rehabilitations screwed onto subcrestal imp…
author: PALAZZOLO, ANTONINO
language: eng
keywords: subcrestal, implant, dental, prosthodontic, bone
date published: 2024-07-01
date modified: 2026-07-27T20:19:08Z
provider: Università degli Studi di Milano
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Università degli Studi di Milano

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property ID: Handle
value: https://hdl.handle.net/2434/1066308