Bonding Strength of Lithium Disilicate Adhesive Crowns with Different Occluso-Cervical Preparation Heights and Cement Types

The aim of this study was to evaluate if adhesion technology with CAD/CAM can compensate for the reduction of occluso cervical preparation heights using different types of dental cement. The de-bonding failure types were then assessed. Here, 72 caries-free extracted human premolar teeth were prepared to have a remaining occlusal height of two, three, and four mm. IPS e.max lithium disilicate CAD/CAM crowns were cemented with adhesive resin cement Panavia SA, self-adhesive resin cement, RelyX Unicem Aplicap, and zinc phosphate cement. The cementation techniques were based on the manufacturer’s instructions. After thermocycling, all samples were tested for tensile bond strength via an Instron machine. One-way analysis of variance (ANOVA) with post hoc testing (P < 0.05) was performed. The means TBS for the two, three, and four-mm OCHP groups were 2.72±0.69, 3.06±0.82, and 3.25±0.79.0 MPa; ARC, SARC, and ZPC were 3.41±0.51, 3.45±0.41, 2.08±0.35 MPa, respectively with significant differences in both. The mixed cement had failures in the resin cement groups. Failure was predominantly cohesive in the zinc phosphate group. Resin cement had the highest SBS values versus ZPC values when both bonded to lithium disilicate crowns with different occlusal heights. The failure of the adhesive to the crown and/or to the tooth were the highest for the four types of resin cement. Around 25% were cohesive failures with resin cement, but this was predominately adhesive in crowns in zinc phosphate regardless of the preparation heights.

Successful dilation and evacuation for second trimester conjoined twin: a case report and review of the literature

Background Conjoined twins are a rare clinical event occurring in about 1 per 250,000 live births. Though the prognosis of conjoined twins is generally low, there is limited evidence as to the optimal method of pregnancy termination, particularly in cases of advanced gestational age. We report a successful dilation and evacuation (D&E) done for conjoined twins at 22 weeks of gestation. Case presentation A 20-year-old primigravid woman was diagnosed with a conjoined, thoraco-omphalopagus twin pregnancy after undergoing a detailed two-dimensional (2D) fetal ultrasound anatomic scanning. Assessment and counseling were done by a multidisciplinary team. The team discussed the prognosis and options of management with the patient. The patient opted for termination of pregnancy. Different options of termination were discussed and the patient consented for D&E, with the possibility of reverting to hysterotomy in case intraoperative difficulty was encountered. A 2-day cervical preparation followed by D&E was done under spinal anesthesia and ultrasound guidance. Conclusion In this patient, D&E was done successfully without complications. Adequate cervical preparation, pain control, and ultrasound guidance during the procedure are critical for optimal outcomes. A literature review of methods of pregnancy termination for conjoined twins in the second trimester revealed 75% delivered vaginally through medical induction while 18% underwent cesarean section. Only one other report described successful D&E for conjoined twins after 20 weeks. D&E can be safely performed for carefully selected cases of conjoined twins beyond 20 weeks’ gestations avoiding the need for induction or hysterotomy.

Pseudo Vaginoscopy: A Modified Vaginoscopy Technique for Outpatient Hysteroscopy in Cases with Difficult Access

Background: Outpatient hysteroscopy is a safe, reliable and cost-effective alternative to hysteroscopy under a general anaesthetic for the diagnosis of abnormal uterine bleeding. Objectives: The objective of this study was to introduce new technique of pseudo-vaginoscopy for better movement of hysteroscope and less procedural pain. Also to assess acceptability of patients for outpatient hysteroscopy when appropriate analgesia was given prior to the procedure. Methodology: A prospective study was conducted of 74 women attending for outpatient hysteroscopy at the West Cumberland Hospital over a period of one year. Selection criteria include very narrow and atrophic vagina and failed speculum examination in gynaecology outpatient clinics. Results: Of the women studied, 95.5% stated that they would recommend the procedure to friends in future, whilst 5.8% would not want to go through it again. The type of anaesthetic administered during the procedure seem to influence whether women would attend for outpatient hysteroscopy in future. Conclusion: Our pseudo-vaginoscopic approach allows more freedom for the scope movements not limited by the speculum with the advantage of prior cervical preparation. It was certainly at value for operative outpatient hysteroscopy in patients with very high BMI where access was difficult owing to depth.

A Rare Presentation of Transvaginal Septum in Second Trimester Abortion: A Case Report

Background: A transvaginal septum occurs if these two tissue groups do not fuse properly by 5 months of embryonic life. The recommended mode of safe termination for second trimester pregnancy with a diagnosis of high transverse vaginal septum is cervical preparation followed by septostomy and dilation and curettage. Case Summary: A 28 years-old gravida-II Para-I (alive by CS for unknown indication) presented at gestational age 15 weeks plus 6. Hysterotomy was done for an indication of septic inevitable missed second trimester abortion plus presumptive diagnosis of high vaginal septum. Conclusion: According to the case reports that has been reported, the recommended management for safe termination of second trimester pregnancy with a diagnosis of transvaginal septum is good cervical preparation followed by septostomy and dilation and curettage (D&E).

Leukocytosis during cervical preparation with osmotic dilators for dilation and evacuation

Objectives: To describe leukocytosis trends during cervical preparation with osmotic dilators for second-trimester dilation and evacuation procedures, and to determine whether there is a difference in leukocytosis seen with laminaria versus Dilapan-S. Methods: We conducted a retrospective cohort study of 986 women presenting for dilation and evacuation from April 2008 through March 2009 at an outpatient clinic network. We included all procedures at ⩾14 weeks’ gestation where laminaria or Dilapan-S dilators were used for overnight dilation. All women had routine white blood cell testing during the study period. Results: There was a median increase of 2.4 × 103/μL white blood cell count (95% confidence interval 2.2–2.7 × 103/μL) from beginning of cervical preparation to the day of procedure (95% confidence interval and p value). Women receiving laminaria ( n = 805) versus Dilapan-S ( n = 181) had a greater increase in white blood cell count from baseline (median increase 2.7 versus 1.2 × 103/μL, p < 0.001), including when adjusting for age, gestational age, parity, baseline white blood cell count, and number of dilators placed. Conclusion: There is increased leukocytosis during the course of cervical preparation with osmotic dilators, and this is increased with use of laminaria versus Dilapan-S. Rates of clinically recognized infection in second-trimester abortion are low regardless of dilator type used.