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This study explored a multidisciplinary approach for managing a Cleft Lip and Palate (CLP) patient with concurrent oral candidiasis. Prosthetic rehabilitation in a 74-year-old woman with CLP is a common congenital deformity. This case highlights the challenges and considerations in providing prosthetic treatment for patients with bone and tooth loss due to CLP, including the necessity of accounting for maxillary deformation and residual palatal defects. Interestingly, during the treatment process, a lesion was found in the rhinopharyngeal area, which was diagnosed as candidiasis caused by Candida albicans. The patient was successfully treated with nystatin, a mouthwash administered four times a day over a 14-day period. This case underscores the importance of comprehensive oral examinations in patients with CLP and the need for innovative clinical approaches to manage associated conditions such as candidiasis. This detailed case report highlights the nuanced treatment pathway for patients with CLP, emphasizing the importance of tailored prosthodontic strategies, interdisciplinary collaboration, and careful clinical observation. [ABSTRACT FROM AUTHOR]

The proposed denture replication method shows a predictable workflow for fabricating complete dentures for patients with existing dentures. The replication technique is a method of fabricating new removable complete dentures utilizing the existing prosthesis as the foundation for a new denture. The technique has some advantages such as allowing the clinician to copy the tooth shape and contours of the existing prosthesis while modifying borders and intaglio surfaces. The denture replication method links proven methods of obtaining functional impressions using soft reline materials to a straightforward digital process. Utilizing the new "copy-denture" feature in the 3Shape software, it is possible to significantly reduce the number of appointments and laboratory labor involved in denture fabrication. The denture replication method protocol is increasing efficiency by reducing the amount of clinical procedures and visits, resulting in decreased treatment time and costs while providing a satisfactory clinical solution. [ABSTRACT FROM AUTHOR]

MB Ravi,1 Sowmya Srinivas,1 Ekaterina Silina,2 Soumee Sengupta,1 Tanvi Tekwani,1 Raghu Ram Achar3 1Department of Prosthodontics, JSS Dental College and Hospital, JSS Academy of Higher Education & Research, Mysuru, Karnataka, India; 2Department of Human Pathology, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia; 3Division of Biochemistry, School of Life Sciences, JSS Academy of Higher Education & Research, Mysuru, Karnataka, IndiaCorrespondence: MB RaviDepartment of Prosthodontics, JSS Dental College and Hospital, JSS Academy of Higher Education & Research, Shri Shivarathreeshwara Nagar, Mysuru, Karnataka, 570015, IndiaEmail dr.ravimb@jssuni.edu.inAbstract: Mucormycosis, a rare fungal infection seen in diabetes, is now very frequent owing to the deadly triad of COVID-19 infection, diabetes, and rampant use of corticosteroids. Immediate management revolves around therapeutic drugs like antifungals, antibiotics, and aggressive surgical debridement. The cases described in the article explain prosthetic rehabilitation of maxillectomy defects. The findings focus on prosthetic rehabilitation of patients with acquired maxillectomy defects after mucormycotic necrosis post-COVID-19 infection and the techniques to overcome the complications like lack of supporting tissues and post-surgical microstomia. The maxillectomies were performed on patients who suffered a superinfection of mucormycosis after COVID-19 contraction and uncontrolled blood sugar levels. Case 1 elaborates a technique to overcome the complications like lack of supporting structures and microstomia by fabrication of sectional and hollow obturator prostheses using sectional impression technique and lost salt technique. Case 2 explains the management of an extensive defect with a mobile soft tissue flap and lone standing tooth by using a functional impression technique to gain retention and support from the remaining soft and hard tissues. Both the techniques overcome the clinical complications and give predictable outcomes. Prosthetic rehabilitation of such challenging cases needs modifications depending upon the clinical challenges encountered.Keywords: maxillectomy, microstomia, sectional impression, lost salt technique, functional impression

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Edentulism can be treated with a removable or fixed prosthesis to improve aesthetics, comfort, and function. The firmness of the residual ridge is crucial for providing sufficient support for soft tissue. However, a flabby ridge lacks adequate tissue support, which poses challenges for clinicians during impression-making and prosthesis fabrication. Conventional prosthodontic approaches are typically used to manage flabby ridges. This article describes two methods for recording flabby ridges: surgical and unique impression techniques. In the first case, the patient was partially edentulous with a flabby ridge in the lower anterior region. This was removed surgically, and a prosthesis was made conventionally. There has been no relapse in treatment after a follow-up of almost one year. In the second case, the flabby ridge was there in the upper anterior region, which was first excised surgically, but the residual ridge was there; hence, the impression was made by the window technique. After a follow-up of almost nine months, there was a relapse in treatment where a flabby ridge was present in the anterior as well as posterior regions. Hence, again, a window impression was recorded, and a new prosthesis was given to the patient, which yielded satisfactory results. In this article, we have presented two cases of flabby ridges that were successfully treated with surgical and non-surgical techniques followed by special impression techniques. Such analogous cases provide dental professionals with insight into the different lines of treatment, relapse, and further management., Competing Interests: Human subjects: Consent was obtained or waived by all participants in this study. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Sharma et al.)

In practice, we want to be as effective in time and achievement, but impressions must be carried out with the utmost attention to detail and dedication to perfection, because it is a mirror of what we want to do. THE PURPOSE of this study is to identify the clinical peculiarities of the different types of impression used in the partially stretched edentation with profound impact in the technological algorithm and in the end of the therapeutic solution approached in the territory of partially removable prosthesesMATERIAL AND METHOD Different types of impressions have been analyzed and materialized in the clinical algorithm of a rehabilitative technique in the partial stretching, dictated by the specificity of the clinical case. Knowing the technological particularities according to the clinical stages is an important demand of this study.RESULTS AND DISCUSSIONS Regarding the use of techniques and materials in practice, several studies have been conducted to observe the choices of practitioners and the methods used in dental schools in the world. In the last decade, the development of fully digitized techniques in all areas of dental medicine began. CONCLUSIONS Functional impression is a particularly important clinical stage with profound impact on the final development of prosthesis

Correct functional border impression and jaw registration is a challenge when edentulous arches are directly digitized with an intraoral scanner. This article describes a digital workflow to replicate complete edentulous arches with full functional contour, and position them in the centric relation using an intraoral scanner, existing denture, and three‐dimensional image reversal technique. Based on the reconstructed images, the base and dental parts of the new denture can be designed efficiently and predictably. [ABSTRACT FROM AUTHOR]

Objective To evaluate the absorption of alveolar bone in anatomic impression and functional impression technique in the repairment of Kennedy class Ⅱ denture defect by cone beam CT(CBCT). Methods 16 patients with mandibular Kennedy Class Ⅱ denture defect were randomly divided into the function group and the anatomical group (n = 8). The function group adopted the functional impression, the anatomical group used anatomic denture impression for denture making. Before denture wearing and after 6 months of normal use of denture, CBCT were used to measure the height of residual alveolar bone in the mesial and distal alveolar bone, and the height difference between the anterior and posterior teeth. Results After 6 months of denture wearing, the height difference of the mesial (n = 0.742, P < 0.05) and distal (t = 5.727, P < 0.05) of the terminal abutment alveolar bone in anatomical group is significantly higher than that of the function group (P < 0.05); the height of residual alveolar bone of anatomical group and functional group has no significant difference (P > 0.05). Conclusion The denture made by function impression can reduce the absorption of al⁃ veolar bone in the mesial and distal of terminal abutment teeth, while different impression methods don’ t have obvious influence on the absorption of residual alveolar bone during the short observation research term.

Soft liner is used to functional impression technique when dental stone is immediately poured after taking impression because of viscoelasticity. In this case, a 78-year-old male visited for new dentures. Due to severe resorption of mandibular edentulous ridge, functional impression taking by closed mouth technique was planned. First of all, making maxillary and mandibular provisional dentures was done, and lined by soft liner to rehabilitate pressured maxillary and mandibular edentulous ridge. After this, Functional impression was taken by closed mouth technique using provisional dentures which are transformed to healed maxillary and mandibular edentulous ridge, and final denture were fabricated using maxillary provisional denture as a reference of artificial teeth arrangement. Consequently, restoring a complete edentulous patient with taking functional impression using provisional dentures resulted in recovering satisfying retention and function. [ABSTRACT FROM AUTHOR]

At the department of prosthodontics, the elderly patients with severely atrophied alveolar ridge who have been wearing complete dentures for a long period frequently visit the clinic. In general, the open-mouth impression technique for manufacturing a mandibular complete denture to secure primary support on buccal shelf area has been prevalent. In addition, for securing retention and stability of mandibular denture, we should consider diagnosis, oral function, denture border, occlusal plane, teeth arrangement, and patient training, etc.. But in edentulous patients with severe alveolar bone atrophy, it may hardly secure retention and stability of mandibular complete denture. To promote these, some of clinicians are making an attempt manufacturing the mandibular complete dentures using closed-mouth impression technique based on several reports that compare various impression techniques including open-mouth and closed-mouth impression technique. This case report suggests closed-mouth impression technique may promote retention and stability of mandibular complete denture and compares between the two impression techniques clinically. [ABSTRACT FROM AUTHOR]

All clinicians face the common problems in making complete denture prosthesis for patients exhibiting high degree of bone resorption. Though resorption can be prevented to an extent but sooner or later it comes back to haunt the clinician. The result is a dis-satisfied patient with a loose prosthesis ready for a new one. The real problem lies in the capturing the oral tissues and using them for creating retention and stability in the prosthesis. Though ultimate success also depends on many other factors such as the occlusal scheme used and patient adaptability yet the most important step still remains the impression technique employed. A few impression techniques are suggested for increasing the success rates in such patients.

Edentulism is a debilitating and irreversible condition with serious psychological, emotional and social consequences. Restoring the dentition can greatly influence the quality of life in these patients. Impression making of the residual ridges is critical to the success of complete denture fabrication. The entire functional denture bearing area must be accurately recorded to ensure maximum support, stability, retention during use. This article aims to describe various impression techniques, their advantages and disadvantages with special emphasis on management of poor denture bearing areas to precisely record the residual ridges in compromised cases such as flabby or resorbed ridges. [ABSTRACT FROM AUTHOR]

In this case report, an alternative impression technique for fabricating removable partial dentures was used in a patient with very few remaining teeth. In this technique, an individual tray was made on the cast, which was made by relining interim denture and taking overimpression with irreversible hydrocolloid according to McLean’s functional impression concept. This method showed the following advantages: the no need for border molding with modeling compound, time saving for denture impression without overextension and accurate seating of the individual tray. [ABSTRACT FROM AUTHOR]

Purpose: The aim of this study was to determine the effect of disinfectant procedures on the dimensional stability and surface quality of a tissue conditioner used as a functional impression material. Materials and Methods: A tissue conditioner (Visco-gel) used as a functional impression material was disinfected by immersion in 5.25% sodium hypochlorite or 2% glutaraldehyde solutions for 10 or 20 minutes, respectively. The control group consisted of specimens (n=10) that were not treated by disinfectants. For testing the dimensional stability, impressions of an aluminum edentulous arch with three reference points were made. After 24 hours of storage in distilled water, the specimens were treated by one of the disinfection procedures. Impressions were poured and, subsequently, 50 stone casts were measured with a Nikon profile projector. For surface roughness evaluation, disks that contained Visco-gel were pressed against glass slides. The disks were then stored in distilled water for 24 hours. After disinfection, 50 disk-shaped dental stone casts were prepared. Surface roughness values were determined using a profilometer. For each test, data were subjected to two-way analysis of variance (ANOVA) followed by Tukey′s test (α = 0.05). Results: The results of the dimensional stability test showed that immersion of Visco-gel impressions in 5.25% sodium hypochlorite solution or 2% glutaraldehyde solution did not significantly change the anteroposterior (AP) and cross-arch (CA) distances of the resultant stone casts when compared to the control group (P>0.05). The surface quality of dental stone casts formed by Visco-gel did not change significantly when impressions were immersed in the disinfectant solutions for either 10 or 20 minutes, or when stored in distilled water (P>0.05). Conclusion: The results showed that the disinfectant solutions used in this study did not have a significant effect on the surface quality and dimensional accuracy of Visco-gel as a functional impression material.

Copyright of Dental Forum is the property of Dental Forum and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

All clinicians face the common problems in making complete denture prosthesis for patients exhibiting high degree of bone resorption. Though resorption can be prevented to an extent but sooner or later it comes back to haunt the clinician. The result is a dis-satisfied patient with a loose prosthesis ready for a new one. The real problem lies in the capturing the oral tissues and using them for creating retention and stability in the prosthesis. Though ultimate success also depends on many other factors such as the occlusal scheme used and patient adaptability yet the most important step still remains the impression technique employed. A few impression techniques are suggested for increasing the success rates in such patients. [ABSTRACT FROM AUTHOR]

A dynamic impression is a functional impression that records the functional movement of the patient's own muscle and muscle attachment. This process reduces the number of random factors. This article describes a method for making a special tray using a dynamic impression concept that was made from provisional dentures used for implant healing. The individual tray is used to make a wash-impression to record the features of the mucosa in detail. The main advantage of this technique is that it provides a functional relationship of the implant components to the supporting tissues without overextension because provisional denture had been used for 2 months and the border length of individual tray was nearly the same as that of provisional denture. The delivery of the prosthesis constructed using this impression technique is time-saving because there is no need for border molding and there are fewer post-insertion appliance adjustments. [ABSTRACT FROM AUTHOR]

In order to present the comprehensive and in-depth application of acrylates in dental prosthetics and orthodontics in this expert-scientific work, we treated our own clinical cases from different ages and with different pathologies. The devices made out of acrylates, as well as the necessary procedure in the treatment of these patients were carefully documented and presented. We confirmed that clinical treatment of patients with dental prosthetics and orthodontics is unthinkable without the presence and use of acrylates. [ABSTRACT FROM AUTHOR]

Abstract: This study was conducted on impression technique on overdenture implants. The overdenture impression records the soft tissue supporting areas including retained roots or implants. Simultaneously with accurate positioning of the implant components for optimal distributions of functional loads, registering the soft tissue in functionally formed impression can be useful. The resultant master cast from this technique is accurate in terms of soft tissue detail, position of implant components, and relationship between soft tissue and implants. [Copyright &y& Elsevier]

PURPOSE: To compare the difference in oblique external ridge, oblique internal ridge and alveolar process crest of lower complete denture base made through functional impression and anatomic impression techniques. METHODS: Fifteen patients were chosen to treat with two kinds of complete dentures through functional impression and anatomic impression technique respectively. 3D laser scanner was used to scan the three-dimensional model of the denture base and the differences of the surface structural between two techniques in alveolar process crest, external and internal oblique ridges were analyzed, using paired t test with SPSS 12,0 software package. RESULTS: Between the two techniques, there were significant differences in the areas of internal and external oblique ridge (P<0.01); there was no significant difference in the main support areas (P>0.05). CONCLUSIONS: The results explain why there is less tenderness when functional impression technique is applied. The differences measured also indicate that sufficient buffering should be made in external and internal oblique ridge areas in clinic. [ABSTRACT FROM AUTHOR]

Purpose: The aim of this study was to determine the effect of disinfectant procedures on the dimensional stability and surface quality of a tissue conditioner used as a functional impression material. Materials and Methods: A tissue conditioner (Visco-gel) used as a functional impression material was disinfected by immersion in 5.25% sodium hypochlorite or 2% glutaraldehyde solutions for 10 or 20 minutes, respectively. The control group consisted of specimens (n=10) that were not treated by disinfectants. For testing the dimensional stability, impressions of an aluminum edentulous arch with three reference points were made. After 24 hours of storage in distilled water, the specimens were treated by one of the disinfection procedures. Impressions were poured and, subsequently, 50 stone casts were measured with a Nikon profile projector. For surface roughness evaluation, disks that contained Visco-gel were pressed against glass slides. The disks were then stored in distilled water for 24 hours. After disinfection, 50 disk- shaped dental stone casts were prepared. Surface roughness values were determined using a profilometer. For each test, data were subjected to two-way analysis of variance (ANOVA) followed by Tukey's test (a = 0.05). Results: The results of the dimensional stability test showed that immersion of Visco-gel impressions in 5.25% sodium hypochlorite solution or 2% glutaraldehyde solution did not significantly change the anteroposterior (AP) and cross-arch (CA) distances of the resultant stone casts when compared to the control group (P>0.05). The surface quality of dental stone casts formed by Visco-gel did not change significantly when impressions were immersed in the disinfectant solutions for either 10 or 20 minutes, or when stored in distilled water (P>0.05). Conclusion: The results showed that the disinfectant solutions used in this study did not have a significant effect on the surface quality and dimensional accuracy of Visco-gel as a functional impression material. [ABSTRACT FROM AUTHOR]

Significant numbers of patients throughout the world seek treatment for edentulism. The trend toward tissue-integrated prostheses has been a monumental step in restoring edentulous patients to function; however, this treatment can be out of reach for those who fail to qualify or those who do not have sufficient resources to afford it. In these cases, conventional dentures remain an important primary course of treatment. Attention to detail when diagnosing, treatment planning, and performing treatment for these patients is still a prime consideration for the best possible outcome. In particular, many experienced denture wearers are afflicted with chronically inflamed denture-bearing mucosa. Clinicians must recognize the need for tissue conditioning, choices of impression materials, and accepted fabrication techniques that can have favorable outcomes when matched with patients who are philosophical and realistic in their expectations. The purpose of this article is to review impression philosophies, associated materials, and methods of tissue conditioning. Retention and stability of the denture bases can be augmented by the routine use of denture adhesive, and indications for use of denture adhesive will be discussed. [ABSTRACT FROM AUTHOR]

: The purpose was to measure the pressure exerted under a simulated mandibular edentulous impression at different locations using commonly used impression materials and four impression tray configurations. : This study was performed using an oral analog that simulated an edentulous mandibular arch. Three pressure transducers were embedded in the oral analog—one pressure transducer in the anterior ridge area, and the other two in the right and left buccal shelves. Four configurations of custom trays were fabricated: trays with no relief, with and without holes; and trays with relief, with and without holes. The impression materials tested were light body polysulfide, light body vinyl polysiloxane, medium body vinyl polysiloxane, and irreversible hydrocolloid. The custom tray and the oral analog were mounted using a reline jig, and a Satec universal testing machine was used to apply a constant pressure of 1 kg/cm2 over a period of 5 minutes on the loaded custom tray. Eighty impressions for the 16 groups (n = 5) were made, and pressures were recorded every 10 seconds. Factorial ANOVA and Tukey Multiple Comparison Test were used to analyze the results ( p < 0.05). : A significant difference was found in the pressure produced using different impression materials. Irreversible hydrocolloid and medium body vinyl polysiloxane produced significantly higher pressure than light body polysulfide and light body vinyl polysiloxane impression materials. The presence of holes and/or relief significantly altered the magnitude of pressure produced by irreversible hydrocolloid and medium body vinyl polysiloxane but not light body polysulfide and light body vinyl polysiloxane. : All impression materials produced pressure during simulated mandibular edentulous impression making. For making mandibular edentulous impressions, low-viscosity impression materials—light body polysulfide and light body vinyl polysiloxane—are recommended. Tray modification was not important in changing the amount of pressure produced for the low-viscosity impression materials. [ABSTRACT FROM AUTHOR]

The conventional fabrication of complete dentures involves two separate clinical sessions for functional impression making and jaw registration. The presented method combines both procedures in one session. The aim of this study was to survey the three-dimensional tooth positions in complete dentures with reference to the ridges to establish arbitrary guideline values that could be used for the manufacturing of tooth-position analogue plastic rims on functional impression trays. New complete dentures were fabricated by supervised undergraduate students in the conventional manner for 104 edentulous patients. The position of the maxillary teeth was surveyed in the horizontal plane using the Schmuth ‘vizor-measuring plate’. The vertical dimension of occlusion, represented as the distance between opposing ridge areas of the dentures in maximum intercuspation, was measured at different sites by means of a Gutowski gauge. The tooth positions on the dentures varied widely, e.g. the horizontal distances between the incisive papilla and the maxillary incisors was 7·1 ± 2·3 (3–14) mm. The vertical dimension of occlusion, which is most important in the jaw registration, varied equally with an anterior inter-alveolar distance between 12 and 33 (20·4 ± 4·0) mm. Arbitrary moulding of the tooth position-analogue plastic rims does not seems to be an ideal method of pre-shaping functional impression trays, because the individual anatomical variation is considerable. Alternatively, the horizontal and vertical tooth positions of functionally and aesthetically pleasing dentures should be measured to pre-shape the rims of functional impression trays in the maxillary and the mandibular jaw. Such trays are a valuable tool for functional impressions and an immediate preliminary jaw registration in the fabrication of new complete dentures. This method allows a first try-in of the full set-up in the third clinical visit without loosing precision. [ABSTRACT FROM AUTHOR]

The dimensional stability of tissue conditioners characterizes the ability of the materials to yield accurate functional impressions of oral mucosa. This study evaluated the linear dimensional changes with time of six tissue conditioners (COE Comfort, FITT, GC Soft‐Liner, Hydro‐Cast, SR‐Ivoseal and Visco‐Gel) using a travelling microscope, and relationship between these changes and weight changes. The absorption and solubility of these materials were also determined. The percentage changes in dimension and weight in water storage were measured at 2 (baseline), 8 and 24 h, and 2, 4, 7, 14 and 21 days after specimen preparation. All materials except SR‐Ivoseal exhibited shrinkage and weight loss during water storage, whilst SR‐Ivoseal exhibited expansion and an increase in weight. The percentage solubility for all materials except SR‐Ivoseal was higher than the percentage absorption. A positive linear relationship was found between the percentage changes in linear dimension and those in weight (r=0·797 − 0·986, P < 0·05). Water absorption and solubility of the materials were found to be associated with dimensional changes. The results suggest that the period recommended for forming functional impressions would be 24 h after insertion in the mouth. In addition, it is important to select tissue conditioners suitable for functional impressions because of the wide ranges of dimensional stability among the materials. [ABSTRACT FROM AUTHOR]

Several implant impression techniques with different materials have been described in the literature. Generally, border molding, functional, and final impressions have been made with 3 different materials, which makes the procedure technique-sensitive and time-consuming. A combination of open-tray and functional impression techniques is described in this technical report. Border molding and functional impression procedures are made at the same time using a vinyl polysiloxane impression material, which makes this technique a simple and time-efficient alternative for clinicians. [ABSTRACT FROM AUTHOR]

Existence of fibrous crests negatively affects the success of treatment in making prosthetic restorations. A fibrous crest occurs in crests without dentine as the mucosa can not follow the rapid resorption of alveolar bone. This structure is also named as flabby ridge. Displaceable, hyperplastic or flabby tissues are commonly seen in combination syndrome and front part of the maxilla. Impression that will be taken in the presence of resorbed alveolar crests and mobile mucosa surrounding it requires a special concern since tissues displaced during impression tends to turn its original form after the impression. In the event of impression flabby ridge region should separately be fixed and integrated with the impression of healthy tissues to avoid loose of retention and stability of the prosthesis. In this article the method of taking the impression of flabby ridge with soft lining material as an alternative to conventional impression technique in constructing a complete prosthesis of the patient with fibrous crest in front side of the maxilla is described. [ABSTRACT FROM AUTHOR]

Tooth loss can cause loss of occlusal, masticatory, esthetic, physiognomic, phonetic and psychosocial function of patients. The most frequently used treatment method of completely edentulous patients and patients with a small number of remaining teeth are complete dentures or overdentures. One of the most important clinical and laboratory procedures in their fabrication is functional impression taking. The aim of this paper was to present procedures of taking functional impressions in fabrication of complete dentures and overdentures, using standardized techniques and materials. An accurate functional impression together with other correctly performed clinical and laboratory procedures ensure good retention and stability of dentures, which is a precondition for restoring patients' lost functions.