Gingival InflammationCairoUNCT04077606
Gingival Inflammatory Response,Bacterial Adhesion and Patient Satisfaction of Ceramo-metallic vs Zirconia Crowns
A study testing ceramo-metallic crown prepartion and full anatomical monolithic zirconia crown in people with Gingival Inflammation and Oral Bacterial Infection, run by Cairo University.
Trial summary
Ceramo metallic restoration has proved high success rate over past years as considered to be the gold standard while Monolithic zirconia as fixed dental prostheses have gained attention because of their good fracture strength, low wear of the enamel antagonist and pleasant color .Material composition will affect… Read more about this study
- Who is it for?
- Ages 20 to 50 yearsHealthy volunteers can take part
- Conditions the study is for
- Gingival Inflammation, Oral Bacterial Infection
- What is being tested?
- ceramo-metallic crown prepartion and full anatomical monolithic zirconia crown
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 20 participants
- Where
- No sites listed yet
- Study dates
- 1 Nov 2019to 1 Dec 2021
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 20 to 50 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Patient age range from 20-50 to be able to read and write in order to sign the informed consent document.
- Patients physically and psychologically able to tolerate conventional restorative procedures.
- Patients with no active periodontal and or pulpal diseases, having teeth with good restorations.
- Patients with root canal treated teeth requiring full coverage restorations.
- Patients indicated for full coverage (e.g. moderate to severe discoloration, coronal fracture).
- Patients didn't take antibiotics or anti-inflammatory in the past three months.
- Surfaces with an adjacent probing pocket depth exceeding 3mm were not included
- Patients willing to return for follow-up examinations and assessments.
Who cannot join
- Patients in the growth stage with partially erupted teeth.
- Patient with poor oral hygiene.
- Patients with psychiatric problems or unrealistic expectations
- Patient with no opposite occluding dentition in the area intended for restoration.
- Patient suffering from Para functional habits.
- Patient with diabetes mellitus, hypertension and gingivitis or periodontitis which has impact on gingival cervicular fluid level
About this study
Official title: Gingival Inflammatory Response, Bacterial Adhesion And Patient Satisfaction Of Ceramo-Metallic Vs Zirconia Crowns (Randomized Clinical Study)
Ceramo metallic restoration has proved high success rate over past years as considered to be the gold standard while Monolithic zirconia as fixed dental prostheses have gained attention because of their good fracture strength, low wear of the enamel antagonist and pleasant color .Material composition will affect gingival health and biofilm formation which initiate caries and periodontal diseases.
Read the detailed description
For years, the ceramo-metal restoration has been the gold standard in crown and bridge procedures .They have been used for many years and studied extensively. Studies have demonstrated a 94% success rate over a 10-year period and good long-term clinical reliability. Although chipping of veneering porcelain is a possible complication, fracture of the metal framework is uncommon . They require sufficient tooth reduction to allow space for at least 0.3 mm of metal coping and 0.7 mm of veneering porcelain, and a minimum facial reduction of 1.2 mm according to Hobo and Shillingburg. When comparing ceramo-metallic crowns to zirconia crowns, several points are noteworthy. Laboratory testing has determined that the fracture strength of a ceramo-metallic crown using 1.5 mm reduction is similar to zirconia crowns with only 1 mm of reduction5. Some manufacturers have even suggested a 0.6 mm minimum reduction for posterior zircona crowns. Which has led some dentists to prescribe all-zirconia restorations to preserve tooth structure6 Zirconia became popular in dentistry because of the material's excellent mechanical properties which include high strength, fracture toughness and biocompatibility.New monolithic CAD/CAM restorative materials are designed to improve the optical and mechanical properties of the avoid veneering failure .To increase translucency and aesthetics of full-contour zirconia ,some modifications ,such as sintering temperature ,fabrication processes and addition of colouring liquids have been applied. These modifications may affect the mechanical and autocatalytic surface-transformation ((low-temperature degradation (LTD)) properties of zirconia.) The primary etiologic factor of gingival inflammation is a plaque, and by inadequate crown shape its accumulation can be facilitated . A single crown can cause inflammation of the periodontal tissue, if the hygienic principles have not been observed during its production. If the finish line of the artificial crown disrupts the biologic width and is placed in the connective tissue attachment area, the inflammation may occur. Even with increased hygiene, the gingival inflammation can occur, if the crown preparation margin is located deeply subgingivally Taking care of the periodontal tissue health the precision of the preparation margin, tightness of proximal contacts, conformity of the tooth crown anatomic shape, occlusal morphology and surface smoothness must be checked . The contact of the crown and the tooth must be tight and uniform .
While choosing material for crown production it must be taken into account that the bacterial adhesive capacity of the prosthetic material is affected by the surface roughness .asperities, free energy of the surface and composition of materials (it is the lowest for ceramic, but the highest for acrylates).Early-colonizing bacteria play a pivotal role for the subsequent adhesion of cariogenic microorganisms such as Streptococcus mutans and periodontal pathogens such as Tannerella forsythensis, Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans, which may induce gingival and periodontal inflammation Periodontal diagnosis generally requires measurement of periodontal tissue destruction (e.g., probing pocket depth [PPD] and clinical attachment level [CAL]) and gingival inflammation (e.g., bleeding on probing [BOP] and gingival index [GI]). Although the techniques used are straightforward and noninvasive. These parameters are static and thus reflect disease history and not present disease activity .Therefore, it is necessary to develop diagnostic tests that can identify active periodontal sites, predict future disease progression, and assess response to periodontal treatment. Periodontopathic bacteria increase the risk of periodontitis, and immune responses against bacterial products and subsequent secretion of proinflammatory cytokines are crucial in periodontal tissue destruction .Interleukin-1β (IL-1β) is an important mediator of inflammatory response and is involved in cell proliferation, differentiation, and apoptosis, and in the pathophysiology of periodontitis.
- Conditions
- Gingival Inflammation, Oral Bacterial Infection
- Being tested
- ceramo-metallic crown prepartion, full anatomical monolithic zirconia crown
- Keywords
- interleukin 1 beta, bacterial adhesion,monolithic zirconia
- Medical subject headings
- Gingivitis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ceramo-metallic crown prepartionOther
Also called feldspathic porcelain fused to metal
tooth will be prepared to receive ceramo-metallic crowns
full anatomical monolithic zirconia crownOther
Also called katana zirconia, Kuraray Noritake , Japan
tooth will be prepared to receive monolithic zirconia crowns
| Study group | Role | What they receive |
|---|---|---|
| ceramo-metallic crown | Active comparator | ceramo-metallic crown preparation Receives: Other: ceramo-metallic crown prepartion; Other: full anatomical monolithic zirconia crown |
| monolithic zirconia crown | Active comparator | monolithic zirconia crown preparation Receives: Other: ceramo-metallic crown prepartion; Other: full anatomical monolithic zirconia crown |
What is being measured
The primary outcome is the main question the study is designed to answer.
Gingival inflammatory response
presence and concentration of interleukin 1 -beta
Measured: 12 weeks
Secondary outcomes (1)
bacterial adhesion
colony forming unit
Measured: 12 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Sep 2019
- Study start1 Nov 2019 (estimated)
- Primary completion1 Dec 2020 (estimated)
- Study completion1 Dec 2021 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (15)Papers the sponsor has linked to this study.
- Other trials for Gingival InflammationStudies of the same condition, open and under way.
- More trials run by Cairo UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Outcomes assessor
- Enrolment
- 20 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Cairo University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Nashwa Yehia Abd El Badee Hefnawy, Cairo University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04077606
- Sponsor's protocol ID
- CairoUniversity
- Acronym
- CairoU
- Status last verified
- Aug 2019
- First submitted
- 19 Aug 2019
- Last updated
- 4 Sep 2019
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Griggs JA. Recent advances in materials for all-ceramic restorations. Dent Clin North Am. 2007 Jul;51(3):713-27, viii. doi: 10.1016/j.cden.2007.04.006.
PubMed 17586152Lekesiz H. Reliability estimation for single-unit ceramic crown restorations. J Dent Res. 2014 Sep;93(9):923-8. doi: 10.1177/0022034514544215. Epub 2014 Jul 21.
PubMed 25048249Sailer I, Makarov NA, Thoma DS, Zwahlen M, Pjetursson BE. All-ceramic or metal-ceramic tooth-supported fixed dental prostheses (FDPs)? A systematic review of the survival and complication rates. Part I: Single crowns (SCs). Dent Mater. 2015 Jun;31(6):603-23. doi: 10.1016/j.dental.2015.02.011. Epub 2015 Apr 2.
PubMed 25842099Hobo S, Shillingburg HT Jr. Porcelain fused to metal: tooth preparation and coping design. J Prosthet Dent. 1973 Jul;30(1):28-36. doi: 10.1016/0022-3913(73)90075-9. No abstract available.
PubMed 4575207Sun T, Zhou S, Lai R, Liu R, Ma S, Zhou Z, Longquan S. Load-bearing capacity and the recommended thickness of dental monolithic zirconia single crowns. J Mech Behav Biomed Mater. 2014 Jul;35:93-101. doi: 10.1016/j.jmbbm.2014.03.014. Epub 2014 Apr 2.
PubMed 24762856Baladhandayutham B, Lawson NC, Burgess JO. Fracture load of ceramic restorations after fatigue loading. J Prosthet Dent. 2015 Aug;114(2):266-71. doi: 10.1016/j.prosdent.2015.03.006. Epub 2015 May 16.
PubMed 25985741Piconi C, Maccauro G. Zirconia as a ceramic biomaterial. Biomaterials. 1999 Jan;20(1):1-25. doi: 10.1016/s0142-9612(98)00010-6.
PubMed 9916767Chen YM, Smales RJ, Yip KH, Sung WJ. Translucency and biaxial flexural strength of four ceramic core materials. Dent Mater. 2008 Nov;24(11):1506-11. doi: 10.1016/j.dental.2008.03.010. Epub 2008 Apr 25.
PubMed 18440062Beuer F, Schweiger J, Eichberger M, Kappert HF, Gernet W, Edelhoff D. High-strength CAD/CAM-fabricated veneering material sintered to zirconia copings--a new fabrication mode for all-ceramic restorations. Dent Mater. 2009 Jan;25(1):121-8. doi: 10.1016/j.dental.2008.04.019. Epub 2008 Jul 11.
PubMed 18620748Goldberg PV, Higginbottom FL, Wilson TG. Periodontal considerations in restorative and implant therapy. Periodontol 2000. 2001;25:100-9. doi: 10.1034/j.1600-0757.2001.22250108.x.
PubMed 11155185Gunay H, Seeger A, Tschernitschek H, Geurtsen W. Placement of the preparation line and periodontal health--a prospective 2-year clinical study. Int J Periodontics Restorative Dent. 2000 Apr;20(2):171-81.
PubMed 11203559Lang NP, Berglundh T, Heitz-Mayfield LJ, Pjetursson BE, Salvi GE, Sanz M. Consensus statements and recommended clinical procedures regarding implant survival and complications. Int J Oral Maxillofac Implants. 2004;19 Suppl:150-4. No abstract available.
PubMed 15635955Zenthofer A, Ohlmann B, Rammelsberg P, Bomicke W. Performance of zirconia ceramic cantilever fixed dental prostheses: 3-year results from a prospective, randomized, controlled pilot study. J Prosthet Dent. 2015 Jul;114(1):34-9. doi: 10.1016/j.prosdent.2015.02.006. Epub 2015 Apr 14.
PubMed 25882973Kato A, Imai K, Ochiai K, Ogata Y. Prevalence and quantitative analysis of Epstein-Barr virus DNA and Porphyromonas gingivalis associated with Japanese chronic periodontitis patients. Clin Oral Investig. 2015 Sep;19(7):1605-10. doi: 10.1007/s00784-014-1387-y. Epub 2014 Dec 18.
PubMed 25515271Reddy MS. The use of periodontal probes and radiographs in clinical trials of diagnostic tests. Ann Periodontol. 1997 Mar;2(1):113-22. doi: 10.1902/annals.1997.2.1.113.
PubMed 9151548
Study at a glance
From the registry record, last updated by the sponsor on 4 Sep 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Gingival Inflammatory Response, Bacterial Adhesion And Patient Satisfaction Of Ceramo-Metallic Vs Zirconia Crowns (Randomized Clinical Study)
- ClinicalTrials.gov ID
- NCT04077606
- Acronym / sponsor ID
- CairoU / CairoUniversity
- Conditions
- Gingival Inflammation, Oral Bacterial Infection
- Keywords
- interleukin 1 beta, bacterial adhesion,monolithic zirconia
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 20 participants (estimated)
- Lead sponsor
- Cairo UniversityUniversity, hospital or other
- Study start
- 1 Nov 2019 (estimated)
- Primary completion
- 1 Dec 2020 (estimated)
- Study completion
- 1 Dec 2021 (estimated)
- First posted
- 4 Sep 2019 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Ceramo metallic restoration has proved high success rate over past years as considered to be the gold standard while Monolithic zirconia as fixed dental prostheses have gained attention because of their good fracture strength, low wear of the enamel antagonist and pleasant color .Material composition will affect gingival health and biofilm formation which initiate caries and periodontal diseases.
Detailed description
For years, the ceramo-metal restoration has been the gold standard in crown and bridge procedures .They have been used for many years and studied extensively. Studies have demonstrated a 94% success rate over a 10-year period and good long-term clinical reliability. Although chipping of veneering porcelain is a possible complication, fracture of the metal framework is uncommon . They require sufficient tooth reduction to allow space for at least 0.3 mm of metal coping and 0.7 mm of veneering porcelain, and a minimum facial reduction of 1.2 mm according to Hobo and Shillingburg. When comparing ceramo-metallic crowns to zirconia crowns, several points are noteworthy. Laboratory testing has determined that the fracture strength of a ceramo-metallic crown using 1.5 mm reduction is similar to zirconia crowns with only 1 mm of reduction5. Some manufacturers have even suggested a 0.6 mm minimum reduction for posterior zircona crowns. Which has led some dentists to prescribe all-zirconia restorations to preserve tooth structure6 Zirconia became popular in dentistry because of the material's excellent mechanical properties which include high strength, fracture toughness and biocompatibility.New monolithic CAD/CAM restorative materials are designed to improve the optical and mechanical properties of the avoid veneering failure .To increase translucency and aesthetics of full-contour zirconia ,some modifications ,such as sintering temperature ,fabrication processes and addition of colouring liquids have been applied. These modifications may affect the mechanical and autocatalytic surface-transformation ((low-temperature degradation (LTD)) properties of zirconia.) The primary etiologic factor of gingival inflammation is a plaque, and by inadequate crown shape its accumulation can be facilitated . A single crown can cause inflammation of the periodontal tissue, if the hygienic principles have not been observed during its production. If the finish line of the artificial crown disrupts the biologic width and is placed in the connective tissue attachment area, the inflammation may occur. Even with increased hygiene, the gingival inflammation can occur, if the crown preparation margin is located deeply subgingivally Taking care of the periodontal tissue health the precision of the preparation margin, tightness of proximal contacts, conformity of the tooth crown anatomic shape, occlusal morphology and surface smoothness must be checked . The contact of the crown and the tooth must be tight and uniform .
While choosing material for crown production it must be taken into account that the bacterial adhesive capacity of the prosthetic material is affected by the surface roughness .asperities, free energy of the surface and composition of materials (it is the lowest for ceramic, but the highest for acrylates).Early-colonizing bacteria play a pivotal role for the subsequent adhesion of cariogenic microorganisms such as Streptococcus mutans and periodontal pathogens such as Tannerella forsythensis, Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans, which may induce gingival and periodontal inflammation Periodontal diagnosis generally requires measurement of periodontal tissue destruction (e.g., probing pocket depth [PPD] and clinical attachment level [CAL]) and gingival inflammation (e.g., bleeding on probing [BOP] and gingival index [GI]). Although the techniques used are straightforward and noninvasive. These parameters are static and thus reflect disease history and not present disease activity .Therefore, it is necessary to develop diagnostic tests that can identify active periodontal sites, predict future disease progression, and assess response to periodontal treatment. Periodontopathic bacteria increase the risk of periodontitis, and immune responses against bacterial products and subsequent secretion of proinflammatory cytokines are crucial in periodontal tissue destruction .Interleukin-1β (IL-1β) is an important mediator of inflammatory response and is involved in cell proliferation, differentiation, and apoptosis, and in the pathophysiology of periodontitis.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| ceramo-metallic crown | Active comparator | Other: ceramo-metallic crown prepartion, Other: full anatomical monolithic zirconia crownceramo-metallic crown preparation |
| monolithic zirconia crown | Active comparator | Other: ceramo-metallic crown prepartion, Other: full anatomical monolithic zirconia crownmonolithic zirconia crown preparation |
Who may qualify
- Ages
- 20 to 50 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (8 listed)
- Patient age range from 20-50 to be able to read and write in order to sign the informed consent document.
- Patients physically and psychologically able to tolerate conventional restorative procedures.
- Patients with no active periodontal and or pulpal diseases, having teeth with good restorations.
- Patients with root canal treated teeth requiring full coverage restorations.
- Patients indicated for full coverage (e.g. moderate to severe discoloration, coronal fracture).
Key exclusion criteria (6 listed)
- Patients in the growth stage with partially erupted teeth.
- Patient with poor oral hygiene.
- Patients with psychiatric problems or unrealistic expectations
- Patient with no opposite occluding dentition in the area intended for restoration.
- Patient suffering from Para functional habits.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| ceramo-metallic crown prepartionAlso: feldspathic porcelain fused to metaltooth will be prepared to receive ceramo-metallic crowns | Other | ceramo-metallic crown, monolithic zirconia crown |
| full anatomical monolithic zirconia crownAlso: katana zirconia, Kuraray Noritake , Japantooth will be prepared to receive monolithic zirconia crowns | Other | ceramo-metallic crown, monolithic zirconia crown |
Primary outcome
Gingival inflammatory response
Time frame: 12 weeks
presence and concentration of interleukin 1 -beta
1 secondary outcome
bacterial adhesion
Time frame: 12 weeks
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Sep 2019.
- Background: PubMed 17586152Griggs JA. Recent advances in materials for all-ceramic restorations. Dent Clin North Am. 2007 Jul;51(3):713-27, viii. doi: 10.1016/j.cden.2007.04.006.
- Background: PubMed 25048249Lekesiz H. Reliability estimation for single-unit ceramic crown restorations. J Dent Res. 2014 Sep;93(9):923-8. doi: 10.1177/0022034514544215. Epub 2014 Jul 21.
- Background: PubMed 25842099Sailer I, Makarov NA, Thoma DS, Zwahlen M, Pjetursson BE. All-ceramic or metal-ceramic tooth-supported fixed dental prostheses (FDPs)? A systematic review of the survival and complication rates. Part I: Single crowns (SCs). Dent Mater. 2015 Jun;31(6):603-23. doi: 10.1016/j.dental.2015.02.011. Epub 2015 Apr 2.
- Background: PubMed 4575207Hobo S, Shillingburg HT Jr. Porcelain fused to metal: tooth preparation and coping design. J Prosthet Dent. 1973 Jul;30(1):28-36. doi: 10.1016/0022-3913(73)90075-9. No abstract available.
- Background: PubMed 24762856Sun T, Zhou S, Lai R, Liu R, Ma S, Zhou Z, Longquan S. Load-bearing capacity and the recommended thickness of dental monolithic zirconia single crowns. J Mech Behav Biomed Mater. 2014 Jul;35:93-101. doi: 10.1016/j.jmbbm.2014.03.014. Epub 2014 Apr 2.
- Background: PubMed 25985741Baladhandayutham B, Lawson NC, Burgess JO. Fracture load of ceramic restorations after fatigue loading. J Prosthet Dent. 2015 Aug;114(2):266-71. doi: 10.1016/j.prosdent.2015.03.006. Epub 2015 May 16.
- Background: PubMed 9916767Piconi C, Maccauro G. Zirconia as a ceramic biomaterial. Biomaterials. 1999 Jan;20(1):1-25. doi: 10.1016/s0142-9612(98)00010-6.
- Background: PubMed 18440062Chen YM, Smales RJ, Yip KH, Sung WJ. Translucency and biaxial flexural strength of four ceramic core materials. Dent Mater. 2008 Nov;24(11):1506-11. doi: 10.1016/j.dental.2008.03.010. Epub 2008 Apr 25.
- Background: PubMed 18620748Beuer F, Schweiger J, Eichberger M, Kappert HF, Gernet W, Edelhoff D. High-strength CAD/CAM-fabricated veneering material sintered to zirconia copings--a new fabrication mode for all-ceramic restorations. Dent Mater. 2009 Jan;25(1):121-8. doi: 10.1016/j.dental.2008.04.019. Epub 2008 Jul 11.
- Background: PubMed 11155185Goldberg PV, Higginbottom FL, Wilson TG. Periodontal considerations in restorative and implant therapy. Periodontol 2000. 2001;25:100-9. doi: 10.1034/j.1600-0757.2001.22250108.x.
- Background: PubMed 11203559Gunay H, Seeger A, Tschernitschek H, Geurtsen W. Placement of the preparation line and periodontal health--a prospective 2-year clinical study. Int J Periodontics Restorative Dent. 2000 Apr;20(2):171-81.
- Background: PubMed 15635955Lang NP, Berglundh T, Heitz-Mayfield LJ, Pjetursson BE, Salvi GE, Sanz M. Consensus statements and recommended clinical procedures regarding implant survival and complications. Int J Oral Maxillofac Implants. 2004;19 Suppl:150-4. No abstract available.
Related trials for Gingival Inflammation
Enrolling by invitation
Comparison of the Effects of Oral Hygiene Regimens on Clinical, Immunomodulatory, and Microbial Outcomes and Oral Tolerance in People With Gingivitis
Microbiome, Cytokines
Active, not recruitingPhase 3
A Study to Assess the Efficacy of Two Brushing Regimens in the Reduction of Established Dental Plaque and Gingivitis
Plaque, Gingivitis
Not yet recruiting
Effectiveness of Personalized Digital Oral Health Intervention in Patients With Fixed Orthodontic Appliances.
Oral Hygiene in Patients With Fixed Orthodontic Appliances, Dental Plaque
Not yet recruitingPhase 2
Efficacy of Thymus Vulgaris Mouthwash in the Management of Biofilm-Induced Gingivitis
Plaque-Induced Gingivitis
Not yet recruitingPhase 3
Periodontal Disease and Small Vulnerable Newborns in Rural Nepal: A Community-based Trial
Preterm Birth, Low Birth Weight
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A study testing ceramo-metallic crown prepartion and full anatomical monolithic zirconia crown in people with Gingival Inflammation and Oral Bacterial Infection, run by Cairo University.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 8 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 4 Sep 2019. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Gingival inflammatory response (time frame: 12 weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04077606, which also lists 15 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Sep 2019.