## 1 Introduction  
Provisional restoration is alternatively referred to as \"interim\" or \"transitional\" restoration. The Glossary of Prosthetic Terms (GPT) defines it as a \"fixed or removable dental prosthesis that is designed in order to improve esthetics, stabilization and/or function for a specified period of time, after which it must be replaced by a permanent dental prosthesis\" [1]. Provisional restoration is an essential element of procedures with fixed prostheses, playing a vital role during tooth preparation and until final steps such as fitting and luting of the permanent restoration [2]. These restorations are significant, particularly in cases where they are expected to function for an unmitigated time period while the final prostheses is being fabricated or when additional treatment is also required before the final rehabilitation is accomplished [3]. A good provisional restoration supports optimal tissue health and may offer vital diagnostic information pertaining to occlusion and esthetics, specifically in complex cases where occlusal and/or esthetic changes are projected [4; 5]. Provisional restorations prepared with polymethyl methacrylate (PMMA) via direct or indirect techniques have been associated with many limitations, such as pulpal irritation initiated by exothermic reactions and polymerization shrinkage resulting in distortion, color instability, and a lack of marginal integrity [6]. Computer-aided design/computer-aided manufacturing (CAD/CAM) has become a well-established technology in dentistry, resulting in increased digitalization and automation of the production process of dental restorations. The advent of digitalization in dentistry has facilitated the fabrication of a variety of prostheses using different materials. CAD/CAM additive and subtractive technology has revolutionized the fabrication of interim restorations in dental clinics [7]. CAD/CAM provisional crowns are semi-translucent, innate, wear-resistant, extremely durable, and esthetically pleasing [8; 9]. The subtractive technique is when the resin blocks are ground to accomplish the desired geometry of the crown, framework, etc. However, this technique causes substantial wastage of raw material and the accuracy is reliant on the size of the cutting burs of the milling machine [10]. 3D printing, also referred to as an additive/layer-upon-layer technique, enables the large-scale production of wear-resistant models, reproduces undercuts and complex internal anatomy, and helps deliver fast, accurate, and economical prostheses with negligible wastage [11]. Retention form involves the features that prevent dislodgment of the prosthesis in the direction along the path of insertion. The taper or convergence angle is the angle formed between the opposing walls of the tooth preparation. As per the literature, the suggested ideal taper should be 2-7\({}^{\circ}\) per axial wall [12]. A lower taper may lead to unnecessary undercut, whereas a higher taper may have compromised retention [13]. Temporary cements are used for the cementation of provisional crowns, fixed partial dentures, inlays, onlays, and the temporary cementation of permanent restorations. These cements must provide an efficient seal between the tooth and restoration by mechanical, micromechanical, or chemical means, and resist wash out, marginal leakage, bacterial infiltration, and caries [14]. Ideal cement should have an adequate working time, facilitate easy removal from the tooth preparation and internal surfaces of the restoration, be biocompatible, and possess a long shelf life [15]. Temporary luting cement is essential for protecting the tooth from microleakage and sensitivity [16]. The seal of the temporary cement must not suffer any changes due to thermal changes in the oral cavity. It is also crucial that upon debonding, the cement must stay on the restoration rather than on the tooth, making it less cumbersome to remove the residual cement extraorally, thus avoiding obliteration of the dentinal tubules [17].